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Wei XH, Liao LY, Yin YX, Xu Q, Xie SS, Liu M, Gao LB, Chen HQ, Zhou R. Overexpression of long noncoding RNA DUXAP8 inhibits ER-phagy through activating AKT/mTOR signaling and contributes to preeclampsia. Cell Mol Life Sci 2024; 81:336. [PMID: 39120751 PMCID: PMC11335266 DOI: 10.1007/s00018-024-05385-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 07/09/2024] [Accepted: 07/29/2024] [Indexed: 08/10/2024]
Abstract
Preeclampsia (PE) is a life-threatening pregnancy-specific complication with controversial mechanisms and no effective treatment except delivery is available. Currently, increasing researchers suggested that PE shares pathophysiologic features with protein misfolding/aggregation disorders, such as Alzheimer disease (AD). Evidences have proposed defective autophagy as a potential source of protein aggregation in PE. Endoplasmic reticulum-selective autophagy (ER-phagy) plays a critical role in clearing misfolded proteins and maintaining ER homeostasis. However, its roles in the molecular pathology of PE remain unclear. We found that lncRNA DUXAP8 was upregulated in preeclamptic placentae and significantly correlated with clinical indicators. DUXAP8 specifically binds to PCBP2 and inhibits its ubiquitination-mediated degradation, and decreased levels of PCBP2 reversed the activation effect of DUXAP8 overexpression on AKT/mTOR signaling pathway. Function experiments showed that DUXAP8 overexpression inhibited trophoblastic proliferation, migration, and invasion of HTR-8/SVneo and JAR cells. Moreover, pathological accumulation of swollen and lytic ER (endoplasmic reticulum) was observed in DUXAP8-overexpressed HTR8/SVneo cells and PE placental villus trophoblast cells, which suggesting that ER clearance ability is impaired. Further studies found that DUXAP8 overexpression impaired ER-phagy and caused protein aggregation medicated by reduced FAM134B and LC3II expression (key proteins involved in ER-phagy) via activating AKT/mTOR signaling pathway. The increased level of FAM134B significantly reversed the inhibitory effect of DUXAP8 overexpression on the proliferation, migration, and invasion of trophoblasts. In vivo, DUXAP8 overexpression through tail vein injection of adenovirus induced PE-like phenotypes in pregnant rats accompanied with activated AKT/mTOR signaling, decreased expression of FAM134B and LC3-II proteins and increased protein aggregation in placental tissues. Our study reveals the important role of lncRNA DUXAP8 in regulating trophoblast biological behaviors through FAM134B-mediated ER-phagy, providing a new theoretical basis for understanding the pathogenesis of PE.
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Affiliation(s)
- Xiao-Hong Wei
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Ling-Yun Liao
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Yang-Xue Yin
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Qin Xu
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Shuang-Shuang Xie
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Min Liu
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Lin-Bo Gao
- Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, 610041, P.R. China
| | - Hong-Qin Chen
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China
| | - Rong Zhou
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University) , Ministry of Education, West China Second University Hospital, Sichuan University, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, Sichuan, P.R. China.
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Hu D, Zhang Z, Liu X, Wu Y, An Y, Wang W, Yang M, Pan Y, Qiao K, Du C, Zhao Y, Li Y, Bao J, Qin T, Pan Y, Xia Z, Zhao X, Sun K. Generalizable transcriptome-based tumor malignant level evaluation and molecular subtyping towards precision oncology. J Transl Med 2024; 22:512. [PMID: 38807223 PMCID: PMC11134716 DOI: 10.1186/s12967-024-05326-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/19/2024] [Indexed: 05/30/2024] Open
Abstract
In cancer treatment, therapeutic strategies that integrate tumor-specific characteristics (i.e., precision oncology) are widely implemented to provide clinical benefits for cancer patients. Here, through in-depth integration of tumor transcriptome and patients' prognoses across cancers, we investigated dysregulated and prognosis-associated genes and catalogued such important genes in a cancer type-dependent manner. Utilizing the expression matrices of these genes, we built models to quantitatively evaluate the malignant levels of tumors across cancers, which could add value to the clinical staging system for improved prediction of patients' survival. Furthermore, we performed a transcriptome-based molecular subtyping on hepatocellular carcinoma, which revealed three subtypes with significantly diversified clinical outcomes, mutation landscapes, immune microenvironment, and dysregulated pathways. As tumor transcriptome was commonly profiled in clinical practice with low experimental complexity and cost, this work proposed easy-to-perform approaches for practical clinical promotion towards better healthcare and precision oncology of cancer patients.
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Affiliation(s)
- Dingxue Hu
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Ziteng Zhang
- Hepato-Biliary Surgery Division, The Second Affiliated Hospital, Shenzhen Third People's Hospital, Southern University of Science and Technology, Shenzhen, 518100, China
| | - Xiaoyi Liu
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Youchun Wu
- Hepato-Biliary Surgery Division, The Second Affiliated Hospital, Shenzhen Third People's Hospital, Southern University of Science and Technology, Shenzhen, 518100, China
| | - Yunyun An
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Wanqiu Wang
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Mengqi Yang
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
| | - Yuqi Pan
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kun Qiao
- Thoracic Surgical Department, Shenzhen Third People's Hospital, The Second Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518100, China
| | - Changzheng Du
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China
- Department of Biochemistry, School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
- Beijing Tsinghua Changgung Hospital, Tsinghua University School of Medicine, Beijing, 102218, China
| | - Yu Zhao
- Molecular Cancer Research Center, School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yan Li
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
- Integrative Microecology Clinical Center, Shenzhen Key Laboratory of Gastrointestinal Microbiota and Disease, Shenzhen Clinical Research Center for Digestive Disease, Shenzhen Technology Research Center of Gut Microbiota Transplantation, Shenzhen Hospital, Southern Medical University, Shenzhen, 510086, China
| | - Jianqiang Bao
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Tao Qin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat- Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Yue Pan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat- Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Zhaohua Xia
- Thoracic Surgical Department, Shenzhen Third People's Hospital, The Second Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518100, China.
| | - Xin Zhao
- Hepato-Biliary Surgery Division, The Second Affiliated Hospital, Shenzhen Third People's Hospital, Southern University of Science and Technology, Shenzhen, 518100, China.
| | - Kun Sun
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen, 518132, China.
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Liu HM, Zhou Y, Chen HX, Wu JW, Ji SK, Shen L, Wang SP, Liu HM, Liu Y, Dai XJ, Zheng YC. LSD1 in drug discovery: From biological function to clinical application. Med Res Rev 2024; 44:833-866. [PMID: 38014919 DOI: 10.1002/med.22000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 10/18/2023] [Accepted: 11/18/2023] [Indexed: 11/29/2023]
Abstract
Lysine-specific demethylase 1 (LSD1) is a flavin adenine dinucleotide (FAD) dependent monoamine oxidase (MAO) that erases the mono-, and dimethylation of histone 3 lysine 4 (H3K4), resulting in the suppression of target gene transcriptions. Besides, it can also demethylate some nonhistone substrates to regulate their biological functions. As reported, LSD1 is widely upregulated and plays a key role in several kinds of cancers, pharmacological or genetic ablation of LSD1 in cancer cells suppresses cell aggressiveness by several distinct mechanisms. Therefore, numerous LSD1 inhibitors, including covalent and noncovalent, have been developed and several of them have entered clinical trials. Herein, we systemically reviewed and discussed the biological function of LSD1 in tumors, lymphocytes as well as LSD1-targeting inhibitors in clinical trials, hoping to benefit the field of LSD1 and its inhibitors.
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Affiliation(s)
- Hui-Min Liu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Ying Zhou
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - He-Xiang Chen
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Jiang-Wan Wu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Shi-Kun Ji
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Liang Shen
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Shao-Peng Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Hong-Min Liu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Ying Liu
- Department of Pharmacy, Henan Engineering Research Center for Application & Translation of Precision Clinical Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Xing-Jie Dai
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Yi-Chao Zheng
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
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Hussain MS, Altamimi ASA, Afzal M, Almalki WH, Kazmi I, Alzarea SI, Saleem S, Prasher P, Oliver B, Singh SK, MacLoughlin R, Dua K, Gupta G. From carcinogenesis to therapeutic avenues: lncRNAs and mTOR crosstalk in lung cancer. Pathol Res Pract 2024; 253:155015. [PMID: 38103364 DOI: 10.1016/j.prp.2023.155015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/02/2023] [Accepted: 12/02/2023] [Indexed: 12/19/2023]
Abstract
Long non-coding RNAs (lncRNAs) have been demonstrated to have a crucial function in the modulation of the activity of genes, impacting a variety of homeostatic processes involving growth, survival, movement, and genomic consistency. Certain lncRNAs' aberrant expression has been linked to carcinogenesis, tumor growth, and therapeutic resistance. They are beneficial for the management of malignancies since they can function as cancer-causing or cancer-suppressing genes and behave as screening or prognosis indicators. The modulation of the tumor microenvironment, metabolic modification, and spread have all been linked to lncRNAs in lung cancer. Recent research has indicated that lncRNAs may interact with various mTOR signalling systems to control expression in lung cancer. Furthermore, the route can affect how lncRNAs are expressed. Emphasizing the function of lncRNAs as crucial participants in the mTOR pathway, the current review intends to examine the interactions between the mTOR cascade and the advancement of lung cancer. The article will shed light on the roles and processes of a few lncRNAs associated with the development of lung cancer, as well as their therapeutic prospects.
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Affiliation(s)
- Md Sadique Hussain
- School of Pharmaceutical Sciences, Jaipur National University, Jagatpura, 302017 Jaipur, Rajasthan, India
| | - Abdulmalik S A Altamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Muhammad Afzal
- Department of Pharmaceutical Sciences, Pharmacy Program, Batterjee Medical College, P.O. Box 6231, Jeddah 21442, Saudi Arabia
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Sami I Alzarea
- ōDepartment of Pharmacology, College of Pharmacy, Jouf University, 72341, Sakaka, Aljouf, Saudi Arabia
| | - Shakir Saleem
- Department of Public Health, College of Health Sciences, Saudi Electronic University, Riyadh, Saudi Arabia
| | - Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Energy Acres, Dehradun 248007, India
| | - Brian Oliver
- Faculty of Science, School of Life Sciences, Sydney, NSW 2007, Australia; Woolcock Institute of Medical Research, Macquarie university, Sydney, NSW, 2137
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 144411, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Ronan MacLoughlin
- School of Pharmacy & Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Leinster D02 YN77, Ireland; School of Pharmacy & Pharmaceutical Sciences, Trinity College, Dublin, Leinster D02 PN40, Ireland; Research and Development, Science and Emerging Technologies, Aerogen Ltd., Galway Business Park, H91 HE94 Galway, Ireland
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
| | - Gaurav Gupta
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; School of Pharmacy, Graphic Era Hill University, Dehradun 248007, India; School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Mahal Road, Jaipur, India.
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5
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Karimi B, Mokhtari K, Rozbahani H, Peymani M, Nabavi N, Entezari M, Rashidi M, Taheriazam A, Ghaedi K, Hashemi M. Pathological roles of miRNAs and pseudogene-derived lncRNAs in human cancers, and their comparison as prognosis/diagnosis biomarkers. Pathol Res Pract 2024; 253:155014. [PMID: 38128189 DOI: 10.1016/j.prp.2023.155014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/02/2023] [Accepted: 12/02/2023] [Indexed: 12/23/2023]
Abstract
This review examines and compares the diagnostic and prognostic capabilities of miRNAs and lncRNAs derived from pseudogenes in cancer patients. Additionally, it delves into their roles in cancer pathogenesis. Both miRNAs and pseudogene-derived lncRNAs have undergone thorough investigation as remarkably sensitive and specific cancer biomarkers, offering significant potential for cancer detection and monitoring. . Extensive research is essential to gain a complete understanding of the precise roles these non-coding RNAs play in cancer, allowing the development of novel targeted therapies and biomarkers for improved cancer detection and treatment approaches.
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Affiliation(s)
- Bahareh Karimi
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Khatere Mokhtari
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Hossein Rozbahani
- Department of Psychology, North Tehran Branch, Islamic Azad University, Tehran, Iran; Department of Psychology, West Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Peymani
- Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Noushin Nabavi
- Department of Urologic Sciences and Vancouver Prostate Centre, University of British Columbia, Vancouver, BC V6H3Z6, Canada
| | - Maliheh Entezari
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; The Health of Plant and Livestock Products Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Afshin Taheriazam
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Kamran Ghaedi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
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Luo W, Lu J, Zheng X, Wang J, Qian S, Bai Z, Wu M. A novel prognostic N 7-methylguanosine-related long non-coding RNA signature in clear cell renal cell carcinoma. Sci Rep 2023; 13:18454. [PMID: 37891201 PMCID: PMC10611723 DOI: 10.1038/s41598-023-45287-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is regulated by methylation modifications and long noncoding RNAs (lncRNAs). However, knowledge of N7-methylguanosine (m7G)-related lncRNAs that predict ccRCC prognosis remains insufficient. A prognostic multi-lncRNA signature was created using LASSO regression to examine the differential expression of m7G-related lncRNAs in ccRCC. Furthermore, we performed Kaplan-Meier analysis and area under the curve (AUC) analysis for diagnosis. In all, a model based on five lncRNAs was developed. Principal component analysis (PCA) indicated that the risk model precisely separated the patients into different groups. The IC50 value for drug sensitivity divided patients into two risk groups. High-risk group of patients was more susceptible to A.443654, A.770041, ABT.888, AMG.706, and AZ628. Moreover, a lower tumor mutation burden combined with low-risk scores was associated with a better prognosis of ccRCC. Quantitative real-time polymerase chain reaction (qRT-PCR) exhibited that the expression levels of LINC01507, AC093278.2 were very high in all five ccRCC cell lines, AC084876.1 was upregulated in all ccRCC cell lines except 786-O, and the levels of AL118508.1 and DUXAP8 were upregulated in the Caki-1 cell line. This risk model may be promising for the clinical prediction of prognosis and immunotherapeutic responses in patients with ccRCC.
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Affiliation(s)
- Wang Luo
- School of Stomatology, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Jing Lu
- Department of Clinical, Zunyi Medical and Pharmaceutical College, Zunyi, 563000, Guizhou, China
| | - Xiang Zheng
- Department of Medical Genetics, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - JinJing Wang
- Department of Pathology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - ShengYan Qian
- School of Stomatology, Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - ZhiXun Bai
- Department of Nephrology, the Second Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China.
| | - MingSong Wu
- School of Stomatology, Zunyi Medical University, Zunyi, 563000, Guizhou, China.
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7
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Li T, Liu X, Ruan X, Dong W, Liu Y, Wang P, Liu L, Tiange E, Song J, Pan A, Xue Y. A novel peptide P1-121aa encoded by STK24P1 regulates vasculogenic mimicry via ELF2 phosphorylation in glioblastoma. Exp Neurol 2023; 367:114477. [PMID: 37406957 DOI: 10.1016/j.expneurol.2023.114477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/24/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
Glioblastoma (GBM) is the most common malignant tumor of the central nervous system. Vasculogenic mimicry (VM) is a hematological system composed of tumor cells that exert blood perfusion without relying on vascular endothelial cells. The current poor results of anti-vascular therapy for clinical GBM are associated with the presence of VM; therefore, it is important to investigate VM formation in GBM. Our results demonstrate that STK24P1 encodes P1-121aa with a kinase structural domain, and in vitro kinase assays demonstrated that P1-121aa mediates modification of ELF2 phosphorylation. ChIP and dual luciferase reporter gene assays demonstrated that the transcription factor ELF2 binds to VE-cadherin and the VEGFR2 promoter region, thereby promoting VM formation in glioma cells. P1-121aa, encoded by the pseudogene STK24P1, phosphorylates ELF2 at S107, increasing the stability of the ELF2 protein. ELF2 promotes VEGFR2 and VE-cadherin expression at the transcriptional level, which in turn promotes VM in GBM. This study demonstrates the important roles of STK24P1, P1-121aa, and ELF2 in regulating VM in GBM, which could provide potential targets for GBM treatment.
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Affiliation(s)
- Tianyun Li
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Xiaobai Liu
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - XueLei Ruan
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Weiwei Dong
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yunhui Liu
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ping Wang
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Libo Liu
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - E Tiange
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jian Song
- Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Aini Pan
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China
| | - Yixue Xue
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang 110122, China; Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang 110004, China.
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Wang J, He X, Yao Q, Wang C, Lu X, Wang R, Miao D. LncRNA PTTG3P promotes tumorigenesis and metastasis of NSCLC by binding with ILF3 to maintain mRNA stability and form a positive feedback loop with E2F1. Int J Biol Sci 2023; 19:4291-4310. [PMID: 37705754 PMCID: PMC10496499 DOI: 10.7150/ijbs.81738] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 08/06/2023] [Indexed: 09/15/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) is a highly lethal disease worldwide. We found the pseudogene-derived lncRNA PTTG3P is upregulated in NSCLC and associated with larger tumor size, advanced staging, and poor prognosis. This study investigated the oncogenic roles and mechanisms of PTTG3P in NSCLC. We demonstrate that PTTG3P promoted NSCLC cell proliferation, migration, tumorigenesis, and metastasis while inhibiting apoptosis in vitro and in vivo. Mechanistically, PTTG3P formed an RNA-protein complex with ILF3 to maintain MAP2K6 and E2F1 mRNA stability, two oncogenic factors involved in NSCLC progression. RNA-seq revealed MAP2K6 and E2F1 were downregulated upon PTTG3P knockdown. RIP and RNA stability assays showed PTTG3P/ILF3 interaction stabilized MAP2K6 and E2F1 transcripts. Interestingly, E2F1 transcriptionally upregulated PTTG3P by binding its promoter, forming a positive feedback loop. Knockdown of E2F1 or PTTG3P attenuated their mutual regulatory effects on cell growth and migration. Thus, a PTTG3P/ILF3/E2F1 axis enhances oncogene expression to promote NSCLC pathogenesis. Our study reveals PTTG3P exerts oncogenic functions in NSCLC via mRNA stabilization and a feedback loop, highlighting its potential as a prognostic biomarker and therapeutic target.
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Affiliation(s)
- Jing Wang
- Department of Human Anatomy, Histology and Embryology, The Research Center for Bone and Stem Cells, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Xuezhi He
- Department of Human Anatomy, Histology and Embryology, The Research Center for Bone and Stem Cells, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Qing Yao
- Department of Endocrinology, Changzhou Second People's Hospital Affiliated Nanjing Medical University, No.29 Xinglong Road, 213003 Changzhou, Jiangsu, People's Republic of China
| | - Chan Wang
- Department of Human Anatomy, Histology and Embryology, The Research Center for Bone and Stem Cells, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Xiyi Lu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rong Wang
- Department of Human Anatomy, Histology and Embryology, The Research Center for Bone and Stem Cells, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Dengshun Miao
- Department of Human Anatomy, Histology and Embryology, The Research Center for Bone and Stem Cells, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
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9
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Maharati A, Moghbeli M. Long non-coding RNAs as the critical regulators of PI3K/AKT, TGF-β, and MAPK signaling pathways during breast tumor progression. J Transl Med 2023; 21:556. [PMID: 37596669 PMCID: PMC10439650 DOI: 10.1186/s12967-023-04434-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/11/2023] [Indexed: 08/20/2023] Open
Abstract
Breast cancer (BC) as one of the most common causes of human deaths among women, is always considered one of the global health challenges. Despite various advances in diagnostic and therapeutic methods, a significant percentage of BC patients have a poor prognosis due to the lack of therapeutic response. Therefore, investigating the molecular mechanisms involved in BC progression can improve the therapeutic and diagnostic strategies in these patients. Cytokine and growth factor-dependent signaling pathways play a key role during BC progression. In addition to cytokines and growth factors, long non-coding RNAs (lncRNAs) have also important roles in regulation of such signaling pathways. Therefore, in the present review we discussed the role of lncRNAs in regulation of PI3K/AKT, MAPK, and TGF-β signaling pathways in breast tumor cells. It has been shown that lncRNAs mainly have an oncogenic role through the promotion of these signaling pathways in BC. This review can be an effective step in introducing the lncRNAs inhibition as a probable therapeutic strategy to reduce tumor growth by suppression of PI3K/AKT, MAPK, and TGF-β signaling pathways in BC patients. In addition, considering the oncogenic role and increased levels of lncRNAs expressions in majority of the breast tumors, lncRNAs can be also considered as the reliable diagnostic markers in BC patients.
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Affiliation(s)
- Amirhosein Maharati
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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10
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Nakamura-García AK, Espinal-Enríquez J. Pseudogenes in Cancer: State of the Art. Cancers (Basel) 2023; 15:4024. [PMID: 37627052 PMCID: PMC10452131 DOI: 10.3390/cancers15164024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Pseudogenes are duplicates of protein-coding genes that have accumulated multiple detrimental alterations, rendering them unable to produce the protein they encode. Initially disregarded as "junk DNA" due to their perceived lack of functionality, research on their biological roles has been hindered by this assumption. Nevertheless, recent focus has shifted towards these molecules due to their abnormal expression in cancer phenotypes. In this review, our objective is to provide a thorough overview of the current understanding of pseudogene formation, the mechanisms governing their expression, and the roles they may play in promoting tumorigenesis.
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11
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Zou K, Zeng Z. Role of early growth response 1 in inflammation-associated lung diseases. Am J Physiol Lung Cell Mol Physiol 2023; 325:L143-L154. [PMID: 37401387 PMCID: PMC10511164 DOI: 10.1152/ajplung.00413.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/03/2023] [Accepted: 06/27/2023] [Indexed: 07/05/2023] Open
Abstract
Early growth response 1 (EGR1), which is involved in cell proliferation, differentiation, apoptosis, adhesion, migration, and immune and inflammatory responses, is a zinc finger transcription factor. EGR1 is a member of the EGR family of early response genes and can be activated by external stimuli such as neurotransmitters, cytokines, hormones, endotoxins, hypoxia, and oxidative stress. EGR1 expression is upregulated during several common respiratory diseases, such as acute lung injury/acute respiratory distress syndrome, chronic obstructive pulmonary disease, asthma, pneumonia, and novel coronavirus disease 2019. Inflammatory response is the common pathophysiological basis of these common respiratory diseases. EGR1 is highly expressed early in the disease, amplifying pathological signals from the extracellular environment and driving disease progression. Thus, EGR1 may be a target for early and effective intervention in these inflammation-associated lung diseases.
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Affiliation(s)
- Kang Zou
- Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical College, Ganzhou, People's Republic of China
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, People's Republic of China
| | - Zhenguo Zeng
- Department of Critical Care Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital of Nanchang University, Nanchang, People's Republic of China
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12
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Ashok G, Das R, Anbarasu A, Ramaiah S. Comprehensive analysis on the diagnostic role of circulatory exosome-based miR-92a-3p for osteoblastic metastases in prostate adenocarcinoma. J Mol Recognit 2023:e3042. [PMID: 37258416 DOI: 10.1002/jmr.3042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/12/2023] [Accepted: 05/21/2023] [Indexed: 06/02/2023]
Abstract
Prostate adenocarcinoma (PRAD) is the second leading cause of death in men and the key factor that attributes to the severity and higher mortality rates is the tumor's ability to promote osteoblastic metastases (OM). Currently, no blood-based biomarkers are present that bridges the crosstalk between PRAD and OM progression. Conversely, circulatory microRNAs (miRNAs) are gaining interest among the scientific community for its potential as blood-based markers for cancer detection. Using computational pipeline, this study screened exosome-based miRNA that is functionally regulating OM in PRAD. We retrieved the expression profile of miRNA, mRNA from PRAD microarray, and RNA-Seq samples deposited in global repositories and identified the differentially expressed miRNAs (DEMs) and differentially expressed genes. Thereafter, the average expression of the miRNAs was identified in extracellular vesicle specifically in exosomes. Survival analysis and clinical profiling identified functionally significant miR-92a-3p to be a key factor in OM. This was further examined by the interactions with various noncoding RNA elements, transcription factors, oncogenes, tumor suppressor genes, and protein kinases regulated by miR-92a-3p. Identifying the expression pattern, nodal metastasis, Gleason score, and hazard ratio deciphered the critical role of the targets regulated by miR-92a-3p. Further, binding association analyzed through energy, seed match and accessibility showed the miRNA-targets involved in cytokine, TGF-β, and Wnt signaling having close regulatory role in promoting OM. Our findings highlight the potent role of miR-92a-3p as blood-based diagnostic biomarker for OM. The comprehensive insights from our study can be elemental in designing diagnostic biomarker for PRAD.
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Affiliation(s)
- Gayathri Ashok
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, India
- Department of Bio-Sciences, SBST, VIT, Vellore, India
| | - Rohini Das
- Department of Computer Science, SCOPE, VIT, Vellore, India
| | - Anand Anbarasu
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, India
- Department of Biotechnology, SBST, VIT, Vellore, India
| | - Sudha Ramaiah
- Medical and Biological Computing Laboratory, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, India
- Department of Bio-Sciences, SBST, VIT, Vellore, India
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13
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Shen X, Zeng Y, Yang C, Jiang L, Chen S, Chen F, Cao P. The diagnostic and prognostic value of pseudogene SIGLEC17P in lung adenocarcinoma and a preliminary functional study. Cell Biol Int 2023; 47:86-97. [PMID: 36183365 DOI: 10.1002/cbin.11919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 01/19/2023]
Abstract
Among malignant tumors, lung adenocarcinoma (LUAD) is the leading cause of death worldwide. This study explored the diagnostic, prognostic value, and preliminary functional verification of sialic acid binding Ig like lectin 17, pseudogene (SIGLEC17P) in LUAD. Prognostic lncRNAs for LUAD were identified by The Cancer Genome Atlas and quantitative real-time PCR (qRT-PCR) was used to detect the expression of SIGLEC17P in LUAD and paracarcinoma tissues. Subsequently, lentiviral vectors were used to overexpress SIGLEC17P in A549 and H1299 cells. The effects of SIGLEC17P overexpression on the proliferation, migration, and invasiveness of LUAD cells (A549 and H1299) were evaluated by Cell Counting Kit-8, wound healing, and transwell migration assays, respectively. Bioinformatics analyses were performed to reveal the potential pathways in which SIGLEC17P is involved in LUAD. qRT-PCR results revealed low SIGLEC17P expression in LUAD tissues and a significant association with the N stage, T stage, and tumor node metastasis stage. Furthermore, the receiver operating characteristic curve demonstrated a reliable diagnostic value. The proliferation, migration, and invasion of LUAD cells were inhibited by overexpression of SIGLEC17P. Bioinformatics analyses suggested that SIGLEC17P might exert antioncogenic effects in LUAD through the mir-20-3p/ADH1B or mir-4476-5p/DPYSL axis. In summary, our results revealed that SIGLEC17P acts as a prognostic biomarker, independent prognostic factor, and potential therapeutic target for patients with LUAD.
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Affiliation(s)
- Xiuqing Shen
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China.,Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Yanfen Zeng
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China
| | - Caihong Yang
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Lili Jiang
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China
| | - Shaoting Chen
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China
| | - Falin Chen
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China.,Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Pengju Cao
- Department of Clinical Laboratory, Fujian Provincial Hospital, Fuzhou, China.,Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
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14
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Lei C, Li S, Fan Y, Hua L, Pan Q, Li Y, Long Z, Yang R. LncRNA DUXAP8 induces breast cancer radioresistance by modulating the PI3K/AKT/mTOR pathway and the EZH2-E-cadherin/RHOB pathway. Cancer Biol Ther 2022; 23:1-13. [PMID: 36329030 PMCID: PMC9635553 DOI: 10.1080/15384047.2022.2132008] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Radiation resistance poses a major clinical challenge in breast cancer (BC) treatment, but little is known about how long noncoding RNA (lncRNA) may regulate this phenomenon. Here, we reported that DUXAP8 was highly expressed in radioresistant BC tissues, and high expression of DUXAP8 was associated with poor prognosis. We found that the overexpression of DUXAP8 promoted radioresistance, while the knockdown of DUXAP8 expression increased radiosensitivity. Further studies revealed that DUXAP8 enhanced the radioresistance of BC cells by activating the PI3K/AKT/mTOR pathway and by repressing the expression of E-cadherin and RHOB through interaction with EZH2. Together, our work demonstrates that the overexpression of DUXAP8 promotes the resistance of BC cells toward radiation through modulating PI3K/AKT/mTOR pathway and EZH2-E-cadherin/RHOB axis. Targeting DUXAP8 may serve as a potential strategy to overcome radioresistance in BC treatment.
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Affiliation(s)
- Changjiang Lei
- Department of General Surgery, the Fifth Hospital of Wuhan, Wuhan, China
| | - Shaoting Li
- Department of Pharmacy, the Fifth Hospital of Wuhan, Wuhan, China
| | - Ying Fan
- Department of Cardiology, the Fifth Hospital of Wuhan, Wuhan, China
| | - Li Hua
- Department of Medical Examination Center, the Fifth Hospital of Wuhan, Wuhan, China
| | - Qingyun Pan
- Department of Blood Endocrinology, the Fifth Hospital of Wuhan, Wuhan, China
| | - Yuan Li
- Department of General Surgery, the Fifth Hospital of Wuhan, Wuhan, China
| | - Zhixiong Long
- Department of Oncology, the Fifth Hospital of Wuhan, Wuhan, China
| | - Rui Yang
- Department of General Surgery, the Fifth Hospital of Wuhan, Wuhan, China,CONTACT Rui Yang Department of General Surgery, the Fifth Hospital of Wuhan, NO. 122, Xianzheng Street, Hanyang District, Wuhan, Hubei430050, China
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15
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Dual role of pseudogene TMEM198B in promoting lipid metabolism and immune escape of glioma cells. Oncogene 2022; 41:4512-4523. [PMID: 36038663 DOI: 10.1038/s41388-022-02445-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/08/2022]
Abstract
Dysregulation of pseudogenes, enhancement of fatty acid synthesis and formation of immunosuppressive microenvironment are important factors that promote the malignant progression of glioma. It is of great significance to search for the molecular mechanism of interaction between the three and then perform targeted interference for improving the treatment of glioma. In this study, we found that pseudogene transmembrane protein 198B (TMEM198B) was highly expressed in glioma tissues and cell lines, and it could promote malignant progression of glioma by regulating lipid metabolism reprogramming and remodeling immune microenvironment. Applying the experimental methods of gene interference, lipidomics and immunology, we further confirmed that TMEM198B promoted PLAG1 like zinc finger 2 (PLAGL2) expression by mediating tri-methylation of histone H3 on lysine 4 (H3K4me3) of PLAGL2 through binding to SET domain containing 1B (SETD1B). Increased PLAGL2 could transcriptional activate ATP citrate lyase (ACLY) and ELOVL fatty acid elongase 6 (ELOVL6) expression, and then influenced the biological behaviors of glioma cells via enhancing the de novo lipogenesis and fatty acid acyl chain elongation. At the same time, TMEM198B promoted macrophages lipid accumulation and intensification of fatty acid oxidation (FAO) through glioma-derived exosomes (GDEs), further induced macrophages to M2 polarization, which subsequently facilitated immune escape of glioma cells. In conclusion, our present study clarifies that the TMEM198B/PLAGL2/ACLY/ELOVL6 pathway conducts crucial regulatory effects on the malignant progression of glioma, which provides novel targets and new ideas for molecular targeted therapy and immunotherapy of glioma.
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16
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Nsengimana B, Khan FA, Awan UA, Wang D, Fang N, Wei W, Zhang W, Ji S. Pseudogenes and Liquid Phase Separation in Epigenetic Expression. Front Oncol 2022; 12:912282. [PMID: 35875144 PMCID: PMC9305658 DOI: 10.3389/fonc.2022.912282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/13/2022] [Indexed: 11/24/2022] Open
Abstract
Pseudogenes have been considered as non-functional genes. However, peptides and long non-coding RNAs produced by pseudogenes are expressed in different tumors. Moreover, the dysregulation of pseudogenes is associated with cancer, and their expressions are higher in tumors compared to normal tissues. Recent studies show that pseudogenes can influence the liquid phase condensates formation. Liquid phase separation involves regulating different epigenetic stages, including transcription, chromatin organization, 3D DNA structure, splicing, and post-transcription modifications like m6A. Several membrane-less organelles, formed through the liquid phase separate, are also involved in the epigenetic regulation, and their defects are associated with cancer development. However, the association between pseudogenes and liquid phase separation remains unrevealed. The current study sought to investigate the relationship between pseudogenes and liquid phase separation in cancer development, as well as their therapeutic implications.
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Affiliation(s)
- Bernard Nsengimana
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Faiz Ali Khan
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- School of Life Sciences, Henan University, Kaifeng, China
- Department of Basic Sciences Research, Shaukat Khanum Memorial Cancer Hospital and Research Centre (SKMCH&RC), Lahore, Pakistan
| | - Usman Ayub Awan
- Department of Medical Laboratory Technology, The University of Haripur, Haripur, Pakistan
| | - Dandan Wang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Na Fang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Wenqiang Wei
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
| | - Weijuan Zhang
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
| | - Shaoping Ji
- Laboratory of Cell Signal Transduction, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Henan University, Kaifeng, China
- *Correspondence: Wenqiang Wei, ; Weijuan Zhang, ; Shaoping Ji,
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17
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Ju M, Fan J, Zou Y, Yu M, Jiang L, Wei Q, Bi J, Hu B, Guan Q, Song X, Dong M, Wang L, Yu L, Wang Y, Kang H, Xin W, Zhao L. Computational Recognition of a Regulatory T-cell-specific Signature With Potential Implications in Prognosis, Immunotherapy, and Therapeutic Resistance of Prostate Cancer. Front Immunol 2022; 13:807840. [PMID: 35812443 PMCID: PMC9259848 DOI: 10.3389/fimmu.2022.807840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 05/23/2022] [Indexed: 11/17/2022] Open
Abstract
Prostate cancer, recognized as a "cold" tumor, has an immunosuppressive microenvironment in which regulatory T cells (Tregs) usually play a major role. Therefore, identifying a prognostic signature of Tregs has promising benefits of improving survival of prostate cancer patients. However, the traditional methods of Treg quantification usually suffer from bias and variability. Transcriptional characteristics have recently been found to have a predictive power for the infiltration of Tregs. Thus, a novel machine learning-based computational framework has been presented using Tregs and 19 other immune cell types using 42 purified immune cell datasets from GEO to identify Treg-specific mRNAs, and a prognostic signature of Tregs (named "TILTregSig") consisting of five mRNAs (SOCS2, EGR1, RRM2, TPP1, and C11orf54) was developed and validated to monitor the prognosis of prostate cancer using the TCGA and ICGC datasets. The TILTregSig showed a stronger predictive power for tumor immunity compared with tumor mutation burden and glycolytic activity, which have been reported as immune predictors. Further analyses indicate that the TILTregSig might influence tumor immunity mainly by mediating tumor-infiltrating Tregs and could be a powerful predictor for Tregs in prostate cancer. Moreover, the TILTregSig showed a promising potential for predicting cancer immunotherapy (CIT) response in five CIT response datasets and therapeutic resistance in the GSCALite dataset in multiple cancers. Our TILTregSig derived from PBMCs makes it possible to achieve a straightforward, noninvasive, and inexpensive detection assay for prostate cancer compared with the current histopathological examination that requires invasive tissue puncture, which lays the foundation for the future development of a panel of different molecules in peripheral blood comprising a biomarker of prostate cancer.
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Affiliation(s)
- Mingyi Ju
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Jingyi Fan
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Yuanjiang Zou
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Mingjie Yu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Longyang Jiang
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Qian Wei
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Jia Bi
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Baohui Hu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Qiutong Guan
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Xinyue Song
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Mingyan Dong
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Lin Wang
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Lifeng Yu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Yan Wang
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Hui Kang
- Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Wei Xin
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
| | - Lin Zhao
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, China Medical University, Shenyang, China
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18
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A lncRNA signature associated with tumor immune heterogeneity predicts distant metastasis in locoregionally advanced nasopharyngeal carcinoma. Nat Commun 2022; 13:2996. [PMID: 35637194 PMCID: PMC9151760 DOI: 10.1038/s41467-022-30709-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 05/12/2022] [Indexed: 12/24/2022] Open
Abstract
Increasing evidence has revealed the roles of long noncoding RNAs (lncRNAs) as tumor biomarkers. Here, we introduce an immune-associated nine-lncRNA signature for predicting distant metastasis in locoregionally advanced nasopharyngeal carcinoma (LA-NPC). The nine lncRNAs are identified through microarray profiling, followed by RT–qPCR validation and selection using a machine learning method in the training cohort (n = 177). This nine-lncRNA signature classifies patients into high and low risk groups, which have significantly different distant metastasis-free survival. Validations in the Guangzhou internal (n = 177) and Guilin external (n = 150) cohorts yield similar results, confirming that the signature is an independent risk factor for distant metastasis and outperforms anatomy-based metrics in identifying patients with high metastatic risk. Integrative analyses show that this nine-lncRNA signature correlates with immune activity and lymphocyte infiltration, which is validated by digital pathology. Our results suggest that the immune-associated nine-lncRNA signature can serve as a promising biomarker for metastasis prediction in LA-NPC. Long noncoding RNAs (lncRNAs) can be used for the development of prognostic signatures to predict tumour metastasis. Here the authors identify an immune-associated nine-lncRNA signature for predicting metastasis in a multicentre cohort of locoregionally advanced nasopharyngeal cancer patients.
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Mao S, Mo Z, Wu R, Lai B, Zhou Z, Song Y, Ouyang X, Zhu X. The double homeobox a pseudogene 8 accelerates cell proliferation, migration, and invasion in colon cancer. Bioengineered 2022; 13:8164-8173. [PMID: 35287542 PMCID: PMC9161926 DOI: 10.1080/21655979.2022.2053802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 03/08/2022] [Accepted: 03/10/2022] [Indexed: 11/11/2022] Open
Abstract
Double homeobox A pseudogene 8 (DUXAP8) is a known tumor promoter in several malignancies. Nonetheless, its function in colon cancer (CC) is indefinite. Herein, we explored the significance of DUXAP8 and its underlying mechanism in CC. Our data indicated that DUXAP8 was upregulated in CC, and it was related to advanced stages and lymph node metastases. Based on our Kaplan-Meier survival analysis, elevated DUXAP8 expression resulted in shorter patient overall survival (OS). Conversely, DUXAP8 silencing strongly suppressed cellular proliferation, migration and invasion in vitro. Based on our western blot analysis, DUXAP8 deficiency strongly inhibited the epithelial-mesenchymal transition (EMT) in vitro. Alternately, DUXAP8 overexpression accelerated cellular proliferation migration and invasion in CC. Finally, silencing DUXAP8 prevented tumorigenesis in a mouse xenograft model in vivo. Collectively, our results demonstrated that DUXAP8 regulates the occurrence and advancement of CC, and may serve as a regulatory hub for this disease.
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Affiliation(s)
- Shengxun Mao
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhaohong Mo
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Runxin Wu
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Bin Lai
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhiyong Zhou
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yi Song
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xi Ouyang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xingen Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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20
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Hu J, Lai C, Shen Z, Yu H, Lin J, Xie W, Su H, Kong J, Han J. A Prognostic Model of Bladder Cancer Based on Metabolism-Related Long Non-Coding RNAs. Front Oncol 2022; 12:833763. [PMID: 35280814 PMCID: PMC8913725 DOI: 10.3389/fonc.2022.833763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 02/03/2022] [Indexed: 11/13/2022] Open
Abstract
Background Some studies have revealed a close relationship between metabolism-related genes and the prognosis of bladder cancer. However, the relationship between metabolism-related long non-coding RNAs (lncRNA) regulating the expression of genetic material and bladder cancer is still blank. From this, we developed and validated a prognostic model based on metabolism-associated lncRNA to analyze the prognosis of bladder cancer. Methods Gene expression, lncRNA sequencing data, and related clinical information were extracted from The Cancer Genome Atlas (TCGA). And we downloaded metabolism-related gene sets from the human metabolism database. Differential expression analysis is used to screen differentially expressed metabolism-related genes and lncRNAs between tumors and paracancer tissues. We then obtained metabolism-related lncRNAs associated with prognosis by correlational analyses, univariate Cox analysis, and logistic least absolute shrinkage and selection operator (LASSO) regression. A risk scoring model is constructed based on the regression coefficient corresponding to lncRNA calculated by multivariate Cox analysis. According to the median risk score, patients were divided into a high-risk group and a low-risk group. Then, we developed and evaluated a nomogram including risk scores and Clinical baseline data to predict the prognosis. Furthermore, we performed gene-set enrichment analysis (GSEA) to explore the role of these metabolism-related lncRNAs in the prognosis of bladder cancer. Results By analyzing the extracted data, our research screened out 12 metabolism-related lncRNAs. There are significant differences in survival between high and low-risk groups divided by the median risk scoring model, and the low-risk group has a more favorable prognosis than the high-risk group. Univariate and multivariate Cox regression analysis showed that the risk score was closely related to the prognosis of bladder cancer. Then we established a nomogram based on multivariate analysis. After evaluation, the modified model has good predictive efficiency and clinical application value. Furthermore, the GSEA showed that these lncRNAs affected bladder cancer prognosis through multiple links. Conclusions A predictive model was established and validated based on 12 metabolism-related lncRNAs and clinical information, and we found these lncRNA affected bladder cancer prognosis through multiple links.
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Affiliation(s)
- Jintao Hu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cong Lai
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zefeng Shen
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hao Yu
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junyi Lin
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weibin Xie
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huabin Su
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jianqiu Kong
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Jinli Han, ; Jianqiu Kong,
| | - Jinli Han
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Clinical Research Center for Urological Diseases, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Jinli Han, ; Jianqiu Kong,
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21
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Wu C, Song W, Wang Z, Wang B. Functions of lncRNA DUXAP8 in non-small cell lung cancer. Mol Biol Rep 2022; 49:2531-2542. [PMID: 35031926 DOI: 10.1007/s11033-021-07066-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/08/2021] [Indexed: 12/13/2022]
Abstract
Non-small cell lung cancer (NSCLC) poses a serious threat to public health due to its significant morbidity and mortality rates. The processes of NSCLC formation and development are quite complex and involve numerous regulatory biomolecules. Long non-coding RNAs (lncRNAs) have attracted attention since they have been found to play critical roles in the tumorigenesis of various human malignancies. Recently, double homeobox A pseudogene 8 (DUXAP8) was identified as an oncogenic lncRNA that is overexpressed in different tumor types. In NSCLC, high expression of DUXAP8 is associated with poor prognosis in patients. The regulatory mechanism underlying the oncogenic effects of DUXAP8 can be divided into transcriptional level and post-transcriptional level. DUXAP8 promotes proliferation, epithelial-mesenchymal transition, and aerobic glycolysis in NSCLC cells. Moreover, DUXAP8 shows potential for the diagnosis and treatment of NSCLC. Herein, we review the molecular mechanisms underlying the DUXAP8-mediated phenotypes of NSCLC as well as its potential clinical applications.
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Affiliation(s)
- Cui Wu
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, No. 1035 Boshuo Road, Changchun, 130117, Jilin, China
| | - Wu Song
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, No. 1035 Boshuo Road, Changchun, 130117, Jilin, China.
| | - Zhongnan Wang
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, No. 1035 Boshuo Road, Changchun, 130117, Jilin, China.
| | - Bingmei Wang
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, No. 1035 Boshuo Road, Changchun, 130117, Jilin, China.
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22
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Gao J, Zhu L, Zhuang H, Lin B. Human Epididymis Protein 4 and Lewis y Enhance Chemotherapeutic Resistance in Epithelial Ovarian Cancer Through the p38 MAPK Pathway. Adv Ther 2022; 39:360-378. [PMID: 34739698 DOI: 10.1007/s12325-021-01941-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/30/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Ovarian cancer has a high mortality rate due to difficulties in early detection and chemotherapy resistance. Human epididymal protein 4 (HE4) has been adopted as a novel serum biomarker for early ovarian cancer diagnosis, and the presence of Lewis y antigen modifications on HE4 in ovarian cancer cell lines has been detected in previous studies. The aim of this study was to analyze the expression of HE4 and Lewis y antigen in human ovarian cancer in order to find a correlation between them, as well as with the clinical pathological parameters of patients with ovarian cancer. METHODS Immunohistochemistry was used to detect the respective expression of these compounds in two patient groups (chemotherapy-resistant and chemotherapy-sensitive) containing a total of 95 patients. Then, a bioinformatic approach was adopted and online large sample databases (TCGA, CCLE, and GTEx; Metascape, Cytoscape) were used to explore the potential mechanisms of action of these compounds. RESULTS The results of this study demonstrate that high HE4 and Lewis y expression could be used as markers for chemotherapy resistance and poor prognosis in patients with ovarian cancer. These two expression events were widely correlated in various cancer tissues and are thought to act by activating the p38 mitogen-activated protein kinases (MAPK) pathway and inducing Vascular Endothelial Growth Factor A (VEGFA), Prostaglandin-Endoperoxide Synthase 2 (PTGS2), Early Growth Response 1 (EGR1), and Hypoxia-Inducible Factor 1-Alpha (HIFI1A), thereby promoting malignant biological behavior and resistance in ovarian cancer. CONCLUSIONS These findings not only reveal the possible mechanism by which HE4 and Lewis y antigen affect ovarian cancer but also identify a four-gene signature that could be very useful in ovarian cancer detection and/or the development of new targeted therapies.
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Affiliation(s)
- Jian Gao
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Benxi, Liaoning, China
| | - Liancheng Zhu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Benxi, Liaoning, China
| | - Huiyu Zhuang
- Department of Obstetrics and Gynecology, Beijing Chaoyang Hospital Affiliated To Capital Medical University, Beijing, 100043, China
| | - Bei Lin
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China.
- Key Laboratory of Maternal-Fetal Medicine of Liaoning Province, Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Benxi, Liaoning, China.
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Liu Z, Lu J, Fang H, Sheng J, Cui M, Yang Y, Tang B, Zhang X. m6A Modification-Mediated DUXAP8 Regulation of Malignant Phenotype and Chemotherapy Resistance of Hepatocellular Carcinoma Through miR-584-5p/MAPK1/ERK Pathway Axis. Front Cell Dev Biol 2021; 9:783385. [PMID: 34957112 PMCID: PMC8696125 DOI: 10.3389/fcell.2021.783385] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Hepatocellular carcinoma (HCC) has a poor prognosis due to its high malignancy, rapid disease progression, and the presence of chemotherapy resistance. Long-stranded non-coding RNAs (lncRNAs) affect many malignant tumors, including HCC. However, their mechanism of action in HCC remains unclear. This study aimed to clarify the role of DUXAP8 in regulating the malignant phenotype and chemotherapy resistance in HCC. Using an in vivo xenograft tumor model, the regulatory functions and mechanisms of lncRNA DUXAP8 in the progression and response of HCC to chemotherapy were explored. It was found that DUXAP8 was significantly upregulated in a patient-derived xenograft tumor model based on sorafenib treatment, which is usually associated with a relatively poor prognosis in patients. In HCC, DUXAP8 maintained its upregulation in the expression by increasing the stability of m6A methylation-mediated RNA. DUXAP8 levels were positively correlated with the proliferation, migration, invasion, and chemotherapy resistance of HCC in vivo and in vitro. In the mechanistic study, it was found that DUXAP8 competitively binds to miR-584-5p through a competing endogenous RNA (ceRNA) mechanism, thus acting as a molecular sponge for miR-584-5p to regulate MAPK1 expression, which in turn activates the MAPK/ERK pathway. These findings can provide ideas for finding new prognostic indicators and therapeutic targets for patients with HCC.
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Affiliation(s)
- Zefeng Liu
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun, China
| | - Jin Lu
- Cancer Center, The First Hospital of Jilin University, Changchun, China
| | - He Fang
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun, China
| | - Jiyao Sheng
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun, China
| | - Mengying Cui
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun, China
| | - Yongsheng Yang
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Bo Tang
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Department of Health Sciences, Hiroshima Shudo University, Hiroshima, Japan
| | - Xuewen Zhang
- Department of Hepatobiliary Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, China.,Jilin Engineering Laboratory for Translational Medicine of Hepatobiliary and Pancreatic Diseases, Changchun, China
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24
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Yuan Y, Chen Z, Cai X, He S, Li D, Zhao W. Identification of Hub Genes Correlated With Poor Prognosis for Patients With Uterine Corpus Endometrial Carcinoma by Integrated Bioinformatics Analysis and Experimental Validation. Front Oncol 2021; 11:766947. [PMID: 34868993 PMCID: PMC8639584 DOI: 10.3389/fonc.2021.766947] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/29/2021] [Indexed: 12/13/2022] Open
Abstract
Uterine Corpus Endometrial Carcinoma (UCEC) is one of the most common malignancies of the female genital tract and there remains a major public health problem. Although significant progress has been made in explaining the progression of UCEC, it is still warranted that molecular mechanisms underlying the tumorigenesis of UCEC are to be elucidated. The aim of the current study was to investigate key modules and hub genes related to UCEC pathogenesis, and to explore potential biomarkers and therapeutic targets for UCEC. The RNA-seq dataset and corresponding clinical information for UCEC patients were obtained from the Cancer Genome Atlas (TCGA) database. Differentially expressed genes (DEGs) were screened between 23 paired UCEC tissues and adjacent non-cancerous tissues. Subsequently, the co-expression network of DEGs was determined via weighted gene co-expression network analysis (WGCNA). The Blue and Brown modules were identified to be significantly positively associated with neoplasm histologic grade. The highly connected genes of the two modules were then investigated as potential key factors related to tumor differentiation. Additionally, a protein-protein interaction (PPI) network for all genes in the two modules was constructed to obtain key modules and nodes. 10 genes were identified by both WGCNA and PPI analyses, and it was shown by Kaplan-Meier curve analysis that 6 out of the 10 genes were significantly negatively related to the 5-year overall survival (OS) in patients (AURKA, BUB1, CDCA8, DLGAP5, KIF2C, TPX2). Besides, according to the DEGs from the two modules, lncRNA-miRNA-mRNA and lncRNA-TF-mRNA networks were constructed to explore the molecular mechanism of UCEC-related lncRNAs. 3 lncRNAs were identified as being significantly negatively related to the 5-year OS (AC015849.16, DUXAP8 and DGCR5), with higher expression in UCEC tissues compared to non-tumor tissues. Finally, quantitative Real-time PCR was applied to validate the expression patterns of hub genes. Cell proliferation and colony formation assays, as well as cell cycle distribution and apoptosis analysis, were performed to test the effects of representative hub genes. Altogether, this study not only promotes our understanding of the molecular mechanisms for the pathogenesis of UCEC but also identifies several promising biomarkers in UCEC development, providing potential therapeutic targets for UCEC.
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Affiliation(s)
- Yi Yuan
- Department of Laboratory Medicine, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhengzheng Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xushan Cai
- Department of Clinical Laboratory, Maternal and Child Health Hospital of Jiading District, Shanghai, China.,School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Shengxiang He
- School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Dong Li
- Department of Laboratory Medicine, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Weidong Zhao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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25
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Ding Y, Liu X, Yang C, Ruan X, Wang D, Liu Y, Shang X, Liu Q, Shen S, Zhu L, Xue Y. Pseudogene RPL32P3 regulates the blood-tumor barrier permeability via the YBX2/HNF4G axis. Cell Death Discov 2021; 7:367. [PMID: 34819492 PMCID: PMC8613260 DOI: 10.1038/s41420-021-00758-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 11/09/2022] Open
Abstract
The existence of the blood–tumor barrier (BTB) severely hinders the transport of anti-tumor drugs to brain tumor tissues. Selectively opening BTB is of great significance to improve the chemotherapy effect of glioma. Pseudogenes have been recognized as important regulators in various biologic processes. In this study, we identified that ribosomal protein L32 pseudogene 3 (RPL32P3) was highly expressed in glioma-exposed endothelial cells (GECs). Knockdown of RPL32P3 decreased the expression of tight junction-related proteins (TJPs) and increased BTB permeability. Subsequent analysis of the underlying mechanism indicated that RPL32P3 recruited lysine methyltransferase 2 A (KMT2A) to the Y-box binding protein 2 (YBX2) promoter region and mediated H3K4me3 to promote YBX2 transcription. Highly expressed YBX2 bound and stabilized hepatocyte nuclear factor 4 gamma (HNF4G) mRNA. Highly expressed HNF4G directly bound to the promoters of TJPs ZO-1, occludin and claudin-5 to promote their transcriptional activities and regulated BTB permeability. The simultaneous knockdown of RPL32P3, YBX2, and HNF4G combined with doxorubicin (DOX) increased the apoptosis of glioma cells. In conclusion, the current study indicated that RPL32P3 knockdown increased BTB permeability through the YBX2/HNF4G pathway. These findings may provide new targets for the comprehensive treatment of glioma.
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Affiliation(s)
- Ye Ding
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Xiaobai Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, China
| | - Chunqing Yang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, China
| | - Xuelei Ruan
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Di Wang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, China
| | - Yunhui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, 110004, China.,Key Laboratory of Neuro-oncology in Liaoning Province, Shenyang, 110004, China
| | - Xiuli Shang
- Department of Neurology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China
| | - Qianshuo Liu
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Shuyuan Shen
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Lu Zhu
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China.,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China.,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China
| | - Yixue Xue
- Department of Neurobiology, School of life Sciences, China Medical University, Shenyang, 110122, China. .,Key Laboratory of Cell Biology, Ministry of Public Health of China, China Medical University, Shenyang, 110122, China. .,Key Laboratory of Medical Cell Biology, Ministry of Education of China, China Medical University, Shenyang, 110122, China.
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26
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Chen X, Chen Z, Wu H, Liu X, Nie F, Wang Z, Sun M. Comprehensive Genomic Characterization Analysis Identifies an Oncogenic Pseudogene RP11-3543B.1 in Human Gastric Cancer. Front Cell Dev Biol 2021; 9:743652. [PMID: 34660601 PMCID: PMC8511815 DOI: 10.3389/fcell.2021.743652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/06/2021] [Indexed: 01/15/2023] Open
Abstract
Background: Gastrointestinal Cancer (GICs) is the most common group of malignancies, and many of its types are the leading causes of cancer related death worldwide. Pseudogenes have been revealed to have critical regulatory roles in human cancers. The objective of this study is to comprehensive characterize the pseudogenes expression profiling and identify key pseudogenes in the development of gastric cancer (GC). Methods: The pseudogenes expression profiling was analyzed in six types of GICs cancer from The Cancer Genome Atlas RNA-seq data to identify GICs cancer related pseudogenes. Meanwhile, the genomic characterization including somatic alterations of pseudogenes was analyzed. Then, CCK8 and colony formation assays were performed to evaluate the biological function of RP11-3543B.1 and miR-145 in gastric cancer cells. The mechanisms of pseudogene RP11-3543B.1 in GC cells were explored via using bioinformatics analysis, next generation sequencing and lucifarese reporter assay. Results: We identified a great number of pseudogenes with significantly altered expression in GICs, and some of these pseudogenes expressed differently among the six cancer types. The amplification or deletion in the pseudogenes-containing loci involved in the alterations of pseudogenes expression in GICs. Among these altered pseudogenes, RP11-3543B.1 is significantly upregulated in gastric cancer. Down-regulation of RP11-3543B.1 expression impaired GC cells proliferation both in vitro and in vivo. RP11-3543B.1 exerts oncogene function via targeting miR-145-5p to regulate MAPK4 expression in gastric cancer cells. Conclusion: Our study reveals the potential of pseudogenes expression as a new paradigm for investigating GI cancer tumorigenesis and discovering prognostic biomarkers for patients.
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Affiliation(s)
- Xin Chen
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Zhenyao Chen
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hao Wu
- Department of Oncology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xianghua Liu
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Fengqi Nie
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Zhaoxia Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Ming Sun
- Suzhou Cancer Center Core Laboratory, Suzhou Municipal Hospital, Gusu School, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Xue C, Cai X, Jia J. Long Non-coding RNA Double Homeobox A Pseudogene 8: A Novel Oncogenic Propellant in Human Cancer. Front Cell Dev Biol 2021; 9:709069. [PMID: 34631702 PMCID: PMC8495153 DOI: 10.3389/fcell.2021.709069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 09/03/2021] [Indexed: 12/12/2022] Open
Abstract
A growing number of studies are reporting important roles played by long non-coding RNAs (lncRNAs) in various pathological and physiological processes. LncRNAs are implicated in numerous genomic regulatory functions at different levels, including regulation of transcription, post-transcriptional processes, genomic stability, and epigenetic genome modifications. Double homeobox A pseudogene 8 (DUXAP8), a novel lncRNA, has been reported to be involved in many cancers, including gastric, colorectal, esophageal, bladder, oral, ovarian, lung, and pancreatic cancers as well as hepatocellular carcinoma (HCC). DUXAP8 plays specific oncogenic roles via numerous malignancies promoting pathways. DUXAP8 is frequently dysregulated in multiple cancers, acting as a sponge to downregulate various tumor-suppressing microRNA activities. In this review, we comprehensively explore DUXAP8 expression and prognosis across cancer types, and systematically summarize current evidence concerning the functions and molecular mechanisms of DUXAP8 in tumorigenesis and progression. We conclude that DUXAP8 is a potential biomarker and therapeutic target for multiple cancers.
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Affiliation(s)
- Chen Xue
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaolu Cai
- Department of Oncological Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Junjun Jia
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Liang H, Wang J, Zhang P, Yang W, Yang Y, Zhi Y, Wu W, Dong X. Long Non-Coding RNA Duxap8 Facilitates Cell Proliferation and Induces Apoptosis in Colorectal Cancer via miR-519b/ZNF277 Axis. Onco Targets Ther 2021; 14:4693-4703. [PMID: 34511937 PMCID: PMC8420781 DOI: 10.2147/ott.s301233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/23/2021] [Indexed: 11/26/2022] Open
Abstract
Introduction Long non-coding RNAs (LncRNAs) play a critical role in development and progression of various cancers. More and more researchers pay attention to the effect of lncRNA on regulating the cancer. However, the function and mechanism of Duxap8 in colorectal cancer have not been studied. Methods Reverse transcription quantitative PCR (RT-qPCR), cell counting kit-8 (CCK-8), 5-ethynyl-20-deoxyuridine (EdU), colony formation assay, flow cytometry, TdT-mediated dUTP nick-end labeling (TUNEL), Western blot, hematoxylin-eosin staining (HE), in situ hybridization (ISH) analysis, immunohistochemistry (IHC) and tumor transplantation experiment were performed to investigate the function and mechanism of Duxap8 in colorectal cancer. Results We found that the expression level of Duxap8 in colorectal cancer was closely correlated with tumor size (P = 0.024), tumor depth (P = 0.035) and lymphatic invasion (P =0.067) among 50 colorectal cancer patients. Then, we proved that the expression level of Duxap8 was significantly increased in human colorectal cancer tissues and cell lines. Functionally, Duxap8 knockdown inhibited the proliferation and induced the apoptosis of colorectal cancer cells, while Duxap8 overexpression facilitated the proliferation and suppressed the apoptosis in colorectal cancer in vitro. Moreover, knockdown of Duxap8 inhibited the size and weight of tumors in mice injected with colorectal cancer cells, overexpression of Duxap8 promoted the growth of colorectal cancer cells in vivo. Mechanically, we found that Duxap8 was principally located in the cytoplasm. Furthermore, Duxap8 functioned as a competing endogenous RNA to induce the development and progression of colorectal cancer through sponging miR-519b-3p to upregulate ZNF277. Discussion Taken together, our results demonstrated that Duxap8 enhanced the expression level of ZEB1 to promote via competing for miR-519b-3p, which might be a promising molecular therapeutic target of colorectal cancer.
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Affiliation(s)
- Hailiang Liang
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215006, People's Republic of China
| | - Jin Wang
- Department of General Surgery, Suzhou Dushu Lake Hospital (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, 215006, People's Republic of China
| | - Peng Zhang
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215006, People's Republic of China
| | - Wei Yang
- Department of General Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou, 225000, People's Republic of China
| | - Yang Yang
- Department of Anesthesiology, The Affiliated Hospital of Yangzhou University, Yangzhou, 225000, People's Republic of China
| | - Yin Zhi
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215006, People's Republic of China
| | - Wei Wu
- Department of General Surgery, The Affiliated Hospital of Yangzhou University, Yangzhou, 225000, People's Republic of China
| | - Xiaoqiang Dong
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215006, People's Republic of China
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Ke X, He L, Wang R, Shen J, Wang Z, Shen Y, Fan L, Shao J, Qi H. miR-377-3p-Mediated EGR1 Downregulation Promotes B[a]P-Induced Lung Tumorigenesis by Wnt/Beta-Catenin Transduction. Front Oncol 2021; 11:699004. [PMID: 34497759 PMCID: PMC8419355 DOI: 10.3389/fonc.2021.699004] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 07/26/2021] [Indexed: 12/24/2022] Open
Abstract
Polycyclic aromatic hydrocarbons (PAHs), particularly benzo[a]pyrene (B[a]P), found in cigarette smoke and air pollution, is an important carcinogen. Nevertheless, early molecular events and related regulatory effects of B[a]P-mediated cell transformation and tumor initiation remain unclear. This study found that EGR1 was significantly downregulated during human bronchial epithelial cell transformation and mice lung carcinogenesis upon exposure to B[a]P and its active form BPDE, respectively. In contrast, overexpression of EGR1 inhibited the BPDE-induced cell malignant transformation. Moreover, miR-377-3p was strongly enhanced by BPDE/B[a]P exposure and crucial for the inhibition of EGR1 expression by targeting the 3'UTR of EGR1. MiR-377-3p antagomir reversed the effect of EGR1 downregulation in cell malignant transformation and tumor initiation models. Furthermore, the B[a]P-induced molecular changes were evaluated by IHC in clinical lung cancer tissues and examined with a clinic database. Mechanistically, EGR1 inhibition was also involved in the regulation of Wnt/β-catenin transduction, promoting lung tumorigenesis following B[a]P/BPDE exposure. Taken together, the results demonstrated that bBenzo[a]pyrene exposure might induce lung tumorigenesis through miR-377-3p-mediated reduction of EGR1 expression, suggesting an important role of EGR1 in PAHs-induced lung carcinogenesis.
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Affiliation(s)
- Xinxin Ke
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lulu He
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Runan Wang
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jing Shen
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhengyang Wang
- Department of Pulmonary and Critical Care Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yifei Shen
- Institute of Crop Science and Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - Longjiang Fan
- Institute of Crop Science and Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - Jimin Shao
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Disease Proteomics of Zhejiang Province, Key Laboratory of Cancer Prevention and Intervention of China National Ministry of Education, and Research Center for Air Pollution and Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hongyan Qi
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Chen X, Gao J, Liang N. DUXAP8 knockdown inhibits the development of melanoma by regulating the miR-3182/NUPR1 pathway. Oncol Lett 2021; 22:495. [PMID: 33981357 PMCID: PMC8108271 DOI: 10.3892/ol.2021.12756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 03/22/2021] [Indexed: 02/03/2023] Open
Abstract
Double homeobox A pseudogene 8 (DUXAP8) has been reported to regulate the growth of several types of cancers, such as breast cancer and ovarian cancer. However, its role in melanoma remains unclear. In the present study, the mechanism through which DUXAP8 regulates melanoma progression was explored. The expression levels of DUXAP8 were determined in 43 samples from patients with melanoma in different stages, as well as human epidermal melanocytes cells and malignant melanoma cell lines using reverse transcription-quantitative PCR (RT-qPCR). The prognosis of patients was analyzed using the Kaplan-Meier method. The relationship between lncRNA DUXAP8 expression and microRNA (miR)-3182 or nuclear protein 1 transcriptional regulator (NUPR1) levels was analyzed using Pearson's correlation. Luciferase reporter and RNA pull-down were used to examine the interactions between these molecules. Proliferation was assessed using Cell Counting-Kit-8. Transwell assays were used to examine cell migration and invasion. lncRNA DUXAP8 was upregulated in melanoma tissue and cells compared with normal tissues and cells. The levels of DUXAP8 inversely correlated with survival time of patients with melanoma. Knockdown of lncRNA DUXAP8 inhibited proliferation, migration and invasion of melanoma cells. lncRNA DUXAP8 targeted miR-3182, while miR-3182 targeted NUPR1. The overexpression of NUPR1 reversed the effects of DUXAP8 knockdown or miR-3182 mimic on melanoma progression. In conclusion, lncRNA DUXAP8 downregulation inhibits the development of melanoma by regulating the miR-3182/NUPR1 axis.
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Affiliation(s)
- Xige Chen
- Department of Dermatology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Juan Gao
- Department of Dermatology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Ning Liang
- Department of Dermatology, The Affiliated Changzhou No. 2 People's Hospital with Nanjing Medical University, Changzhou, Jiangsu 213000, P.R. China
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31
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Sun J, Peng Y, Liu J, Zhou H, Sun L, He Q, Yu E. Pseudogene legumain promotes thyroid carcinoma progression via the microRNA-495/autophagy pathway. Oncol Lett 2021; 22:616. [PMID: 34257724 PMCID: PMC8243076 DOI: 10.3892/ol.2021.12877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/24/2021] [Indexed: 01/03/2023] Open
Abstract
The pseudogene legumain (LGMN) has been reported to regulate cancer cell biology. However, the role of LGMN in thyroid carcinoma remains unknown. Herein, Cell Counting Kit 8 and Transwell assays were performed to evaluate cellular proliferation and invasion capacity, respectively. In addition, a tube formation assay was performed to assess HUVEC angiogenesis. The results showed that LGMN depletion attenuated cellular proliferation, invasion and tube formation ability, and that LGMN expression was dysregulated in thyroid carcinoma tumors. Furthermore, patients with high LGMN expression levels exhibited a lower overall survival rate than those with low expression levels. LGMN and microRNA (miR)-495 modulated the expression levels of autophagy-related gene 3 (ATG3) and p62. Finally, ATG3 overexpression rescued the LGMN-regulated thyroid carcinoma phenotype. In conclusion, LGMN was found to promote thyroid carcinoma progression via the miR-495/autophagy axis, thus providing novel insights for understanding the pathogenesis of thyroid carcinoma.
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Affiliation(s)
- Jie Sun
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yicheng Peng
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jianxia Liu
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Hao Zhou
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Liang Sun
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Qin He
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Enqiao Yu
- Department of Breast Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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Chen L, Wu C, Wang H, Chen S, Ma D, Tao Y, Wang X, Luan Y, Wang T, Shi Y, Song G, Zhao Y, Dong X, Wang B. Analysis of Long Noncoding RNAs in Aila-Induced Non-Small Cell Lung Cancer Inhibition. Front Oncol 2021; 11:652567. [PMID: 34235076 PMCID: PMC8255921 DOI: 10.3389/fonc.2021.652567] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/21/2021] [Indexed: 01/24/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) has the highest morbidity and mortality among all carcinomas. However, it is difficult to diagnose in the early stage, and current therapeutic efficacy is not ideal. Although numerous studies have revealed that Ailanthone (Aila), a natural product, can inhibit multiple cancers by reducing cell proliferation and invasion and inducing apoptosis, the mechanism by which Aila represses NSCLC progression in a time-dependent manner remains unclear. In this study, we observed that most long noncoding RNAs (lncRNAs) were either notably up- or downregulated in NSCLC cells after treatment with Aila. Moreover, alterations in lncRNA expression induced by Aila were crucial for the initiation and metastasis of NSCLC. Furthermore, in our research, expression of DUXAP8 was significantly downregulated in NSCLC cells after treatment with Aila and regulated expression levels of EGR1. In conclusion, our findings demonstrate that Aila is a potent natural suppressor of NSCLC by modulating expression of DUXAP8 and EGR1.
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Affiliation(s)
- Lin Chen
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China.,College of Animal Science, Jilin University, Changchun, China
| | - Cui Wu
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Heming Wang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Sinuo Chen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Danhui Ma
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Ye Tao
- Affiliated Hospital to Changchun University of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Xingye Wang
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Yanhe Luan
- Affiliated Hospital to Changchun University of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Tiedong Wang
- College of Animal Science, Jilin University, Changchun, China
| | - Yan Shi
- School of Pharmacy, Jilin University, Changchun, China
| | - Guangqi Song
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Gastroenterology and Hepatology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Yicheng Zhao
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Xijun Dong
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China.,Affiliated Hospital to Changchun University of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Bingmei Wang
- College of Clinical Medicine, College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
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Integrative profiling analysis identifies the oncogenic long noncoding RNA DUXAP8 in oral cancer. Anticancer Drugs 2021; 31:792-798. [PMID: 32304409 DOI: 10.1097/cad.0000000000000936] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A growing number of studies have revealed the critical roles of long noncoding RNAs (lncRNAs) in the tumorigenesis and cancer progression. Recently, next-generation sequencing technologies combined with bioinformatic have demonstrated that a great number of dysregulated lncRNAs are associated with diverse cancers. However, lots of lncRNAs' function and their underlying molecular mechanisms in oral carcinoma (OC) cancer remain unclear. In this study, we performed integrative lncRNA profiling analysis using the TCGA RNA sequencing data and gene microarray data from Gene Expression Omnibus to identify more OC associated lncRNAs. A total of 619 differentially expressed lncRNAs were identified between the five data sets, and only the double homeobox A pseudogene 8 (DUXAP8) was screened among the up-regulated lncRNAs in all the five groups. Meanwhile, univariate Cox regression analyses disclosed that some lncRNAs are associated with the outcome of OC patients, such as DUXAP8, LINC00152, MIR4435-2HG and LINC00582. Furthermore, we uncovered that silenced DUXAP8 expression exerted suppressive impact on the proliferation of OC cells through interacting with histone-lysine N-methyltransferase enzyme Enhancer of zeste homolog 2 (EZH2) and repressing KLF2 expression. In a word, we identified a lot of unreported OC associated lncRNAs, which may provide a useful resource of lncRNAs for other studies.
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The potential roles of lncRNAs DUXAP8, LINC00963, and FOXD2-AS1 in luminal breast cancer based on expression analysis and bioinformatic approaches. Hum Cell 2021; 34:1227-1243. [PMID: 34043149 DOI: 10.1007/s13577-021-00539-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 04/18/2021] [Indexed: 10/21/2022]
Abstract
Numerous studies have demonstrated that lncRNAs participate in regulatory networks of different cancers. Dysregulation of various lncRNAs such as DUXAP8, LINC00963, and FOXD2-AS1 has been reported in the development of various cancers. The aim of this study was investigation of the importance and potential roles of DUXAP8, LINC00963, and FOXD2-AS1 in ER+ breast cancer (BC). We examined the expression levels of DUXAP8, LINC00963, and FOXD2-AS1 in 71 luminal A and B tumor tissues and two luminal A cell lines (MCF7 and T47D) compared with adjacent non-tumor tissues and MCF10A cell line by qRT-PCR assay, respectively. For identifying the relation between three lncRNAs and luminal BC, bioinformatic analyses were performed using some databases and software including GENEVESTIGATOR software, GEPIA2, DAVID, REVIGO, STRING, lncATLAS, Kaplan-Meier plotter, starBase, and miRNet tool. The results showed the significant upregulation of all three lncRNAs in luminal A and B tumor specimens and cell lines. Upregulation of DUXAP8 and FOXD2-AS1 was significantly associated with progesterone receptor-positive (PR+) and p53 protein expression in luminal BC patients, respectively. Based on bioinformatic analyses, DUXAP8 can be considered as a prognostic biomarker for patients with luminal BC. DUXAP8, LINC00963, and FOXD2-AS1 are involved in several cancer-associated signaling pathways and multiple cancer-related processes. In addition, bioinformatic analyses indicated that LINC00963/hsa-mir-130a-3p/HSPA8 axis might have potential regulatory role in BC. In conclusion, dysregulation of DUXAP8, LINC00963, and FOXD2-AS1 can play roles in the development of luminal BC. They may exert their functions through involvement in some cancer signaling pathways and processes. In addition, they may interact with miRNAs like predicted interaction of LINC00963 with miR-130a-3p.
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Norcantharidin-blocked ANXA2P2 inhibits fibroblast proliferation by increasing UBAP2L mRNA stability through LIN28B. Life Sci 2021; 279:119645. [PMID: 34043991 DOI: 10.1016/j.lfs.2021.119645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/28/2021] [Accepted: 05/20/2021] [Indexed: 11/21/2022]
Abstract
AIMS Norcantharidin (NCTD) exhibits antitumor, anti-inflammatory, and anti-fibrosis properties, which makes NCTD an attractive candidate for the treatment of pathological scars. This study was designed to investigate the potential effects of NCTD on fibroblast proliferation and explore the underlying mechanisms. MATERIALS AND METHODS First, cell viability and cell apoptosis were evaluated to determine the effects of NCTD on human skin fibroblasts, at 10, 50, and 100 μM. To explore the mechanism, bioinformatics analyses, chromatin immunoprecipitation, RNA immunoprecipitation, and RNA pulldown assays, and luciferase reporter assays were performed to verify the relationships among NCTD, signal transducer and activator of transcription 3 (STAT3), annexin A2 pseudogene 2 (ANXA2P2), and ubiquitin-associated protein 2-like (UBAP2L) mRNA in fibroblasts. Loss-of-function experiments were performed to investigate the roles played by STAT3, ANXA2P2, and UBAP2L in the proliferation and apoptosis of fibroblasts. KEY FINDINGS We found that NCTD administration induced fibroblast apoptosis and inhibited fibroblast proliferation in a dose-dependent manner. Mechanistically, NCTD inhibited ANXA2P2 transcription through the inhibition of STAT3 phosphorylation. Subsequently, ANXA2P2 was found to enhance the physical interaction between UBAP2L mRNA and lin-28 homolog B (LIN28B), which increased the stability and levels of UBAP2L mRNA. Loss-of-function assays demonstrated that ANXA2P2 and UBAP2L knockdown induced fibroblast apoptosis and suppressed fibroblast proliferation. SIGNIFICANCE In conclusion, we confirmed that NCTD inhibits fibroblast proliferation by inhibiting the STAT3/ANXA2P2/UBAP2L axis, which suggested that NCTD could represent a new candidate for the treatment of pathological scars.
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Guan Q, Yuan B, Zhang X, Yan T, Li J, Xu W. Long non-coding RNA DUXAP8 promotes tumorigenesis by regulating IGF1R via miR-9-3p in hepatocellular carcinoma. Exp Ther Med 2021; 22:755. [PMID: 34035852 PMCID: PMC8135127 DOI: 10.3892/etm.2021.10187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 08/13/2020] [Indexed: 12/11/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related death worldwide with a low 5-year survival rate. Long non-coding RNA (lncRNA) double homeobox A pseudogene 8 (DUXAP8) is an oncogene and a potential biomarker in various tumors, such as ovarian, colorectal and non-small-cell lung cancer. However, the function and molecular mechanism underlying DUXAP8 in HCC progression is not completely understood. The expression of DUXAP8, microRNA (miR)-9-3p and insulin-like growth factor 1 receptor (IGF1R) in HCC tissues and cells was detected via reverse transcription-quantitative PCR. The expression levels of IGF1R and epithelial-mesenchymal transition-associated proteins (Snail, Slug, E-cadherin, N-cadherin and vimentin) were assessed via western blotting. The effects of DUXAP8, miR-9-3p and IGF1R on proliferation, migration and invasion were examined by conducting Cell Counting Kit-8 and Transwell assays, respectively. The interaction between miR-9-3p and DUXAP8 or IGF1R was predicted using StarBase or TargetScan, and further assessed using dual luciferase reporter and RNA immunoprecipitation assays. DUXAP8 and IGF1R were upregulated and miR-9-3p was downregulated in HCC tissues and cells compared with adjacent healthy tissues and a normal liver cell line, respectively. miR-9-3p overexpression decreased the protein expression level of IGF1R, and miR-9-3p knockdown enhanced the protein expression level of IGF1R in HCC cells compared with the corresponding control groups. Moreover, compared with the corresponding control groups, DUXAP8 knockdown and miR-9-3p overexpression increased E-cadherin protein expression levels, and decreased Snail, Slug, N-cadherin and vimentin protein expression levels. However, miR-9-3p inhibitor and IGF1R overexpression reversed DUXAP8 knockdown- and miR-9-3p overexpression-induced effects, respectively. In addition, compared with the corresponding control groups, DUXAP8 knockdown and miR-9-3p overexpression suppressed proliferation, migration and invasion, which was reversed by miR-9-3p inhibitor and IGF1R overexpression, respectively. Moreover, miR-9-3p as the target of DUXAP8 and IGF1R as the target of miR-9-3p were verified in HCC cells. lncRNA DUXAP8 contributed to HCC tumorigenesis via the miR-9-3p/IGF1R axis, providing a novel therapeutic approach for HCC diagnosis and treatment.
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Affiliation(s)
- Qiang Guan
- Department of Hepatobiliary Surgery, People's Hospital of Dongying, Dongying, Shandong 257091, P.R. China
| | - Bo Yuan
- Department of Hepatobiliary Surgery, People's Hospital of Dongying, Dongying, Shandong 257091, P.R. China
| | - Xiaobin Zhang
- Department of Hepatobiliary Surgery, People's Hospital of Dongying, Dongying, Shandong 257091, P.R. China
| | - Tinghai Yan
- Department of Oncology, People's Hospital of Wudi, Binzhou, Shandong 251900, P.R. China
| | - Jiangong Li
- Department of Hepatobiliary Surgery, People's Hospital of Dongying, Dongying, Shandong 257091, P.R. China
| | - Wuzhong Xu
- Department of Hepatobiliary Surgery, People's Hospital of Dongying, Dongying, Shandong 257091, P.R. China
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Sun S, Zane A, Fulton C, Philipoom J. Statistical and bioinformatic analysis of hemimethylation patterns in non-small cell lung cancer. BMC Cancer 2021; 21:268. [PMID: 33711952 PMCID: PMC7953768 DOI: 10.1186/s12885-021-07990-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 03/01/2021] [Indexed: 12/22/2022] Open
Abstract
Background DNA methylation is an epigenetic event involving the addition of a methyl-group to a cytosine-guanine base pair (i.e., CpG site). It is associated with different cancers. Our research focuses on studying non-small cell lung cancer hemimethylation, which refers to methylation occurring on only one of the two DNA strands. Many studies often assume that methylation occurs on both DNA strands at a CpG site. However, recent publications show the existence of hemimethylation and its significant impact. Therefore, it is important to identify cancer hemimethylation patterns. Methods In this paper, we use the Wilcoxon signed rank test to identify hemimethylated CpG sites based on publicly available non-small cell lung cancer methylation sequencing data. We then identify two types of hemimethylated CpG clusters, regular and polarity clusters, and genes with large numbers of hemimethylated sites. Highly hemimethylated genes are then studied for their biological interactions using available bioinformatics tools. Results In this paper, we have conducted the first-ever investigation of hemimethylation in lung cancer. Our results show that hemimethylation does exist in lung cells either as singletons or clusters. Most clusters contain only two or three CpG sites. Polarity clusters are much shorter than regular clusters and appear less frequently. The majority of clusters found in tumor samples have no overlap with clusters found in normal samples, and vice versa. Several genes that are known to be associated with cancer are hemimethylated differently between the cancerous and normal samples. Furthermore, highly hemimethylated genes exhibit many different interactions with other genes that may be associated with cancer. Hemimethylation has diverse patterns and frequencies that are comparable between normal and tumorous cells. Therefore, hemimethylation may be related to both normal and tumor cell development. Conclusions Our research has identified CpG clusters and genes that are hemimethylated in normal and lung tumor samples. Due to the potential impact of hemimethylation on gene expression and cell function, these clusters and genes may be important to advance our understanding of the development and progression of non-small cell lung cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-07990-7.
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Affiliation(s)
- Shuying Sun
- Department of Mathematics, Texas State University, San Marcos, TX, USA.
| | - Austin Zane
- Department of Statistics, Texas A&M University, College Station, TX, USA
| | - Carolyn Fulton
- Department of Mathematics, Schreiner University, Kerrville, TX, USA
| | - Jasmine Philipoom
- Department of Mathematics, Applied Mathematics, and Statistics, Case Western Reserve University, Cleveland, OH, USA
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Hong Y, Li X, Zhu J. LSD1-mediated stabilization of SEPT6 protein activates the TGF-β1 pathway and regulates non-small-cell lung cancer metastasis. Cancer Gene Ther 2021; 29:189-201. [PMID: 33664458 DOI: 10.1038/s41417-021-00297-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 12/30/2020] [Accepted: 01/13/2021] [Indexed: 01/21/2023]
Abstract
Non-small cell lung cancer (NSCLC) is a prevalent cancer with unfavorable prognosis. Over the past decade accumulating studies have reported an involvement of lysine-specific histone demethylase 1 (LSD1) in NSCLC development. Here, we aimed to explore whether LSD1 affects the metastasis of NSCLC by mediating Septin 6 (SEPT6) through the TGF-β1 pathway. RT-qPCR was used to determine LSD1 and SEPT6 expression in NSCLC tissues and cells. Interactions between LSD1, SEPT6, and TGF-β1 were detected using lentivirus-mediated silencing of LSD1 and overexpression of SEPT6. The role of LSD1 and SEPT6 in mediating the biological behavior of NSCLC cells was determined using the EdU proliferation assay, Transwell assay, and flow cytometry. Thereafter, transplanted cell tumors into nude mice were used to explore the in vivo effects of LSD1 and SEPT6 on metastasis of NSCLC. LSD1 and SEPT6 were overexpressed in NSCLC tissue and cell samples. LSD1 could demethylate the promoter of the SEPT6 to positively regulate SEPT6 expression. LSD1 promoted proliferation, migration, and invasion, while suppressing the apoptosis of NSCLC cells by increasing SEPT6 expression. LSD1-mediated SEPT6 accelerated in vivo NSCLC metastasis through the TGF-β1/Smad pathway. Collectively, LSD1 demethylates SEPT6 promoter to upregulate SEPT6, which activates TGF-β1 pathway, thereby promoting metastasis of NSCLC.
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Affiliation(s)
- Yanni Hong
- Department of Oncology, Quanzhou First Hospital Affiliated Fujian Medical University, Quanzhou, P.R. China.
| | - Xiaofeng Li
- Department of Oncology, Quanzhou First Hospital Affiliated Fujian Medical University, Quanzhou, P.R. China
| | - Jinfeng Zhu
- Department of Oncology, Quanzhou First Hospital Affiliated Fujian Medical University, Quanzhou, P.R. China
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Li JR, Liu L, Luo H, Chen ZG, Wang JH, Li NF. Long Noncoding RNA DUXAP8 Promotes Pancreatic Carcinoma Cell Migration and Invasion Via Pathway by miR-448/WTAP/Fak Signaling Axis. Pancreas 2021; 50:317-326. [PMID: 33625109 PMCID: PMC8041564 DOI: 10.1097/mpa.0000000000001751] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 12/19/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Pancreatic carcinoma (PC) has become the fourth leading cause of cancer deaths. Long noncoding RNA DUXAP8 has also been reported to play a regulatory role in PC progression. However, its molecular mechanism in PC is not fully elucidated. METHODS Quantitative real-time polymerase chain reaction was used to detect the levels of DUXAP8, microRNA (miR)-448, Wilms tumor 1-associating protein (WTAP), focal adhesion kinase (Fak), and matrix metallopeptidase 2/9. Western blotting was carried out to detect matrix metallopeptidase 2/9, WTAP, Fak, and p-Fak. The interaction between DUXAP8 and miR-448 as well as WTAP and miR-448 was validated by bioinformatics and dual-luciferase reporter assays. Transwell assay was used to analyze cell invasion and migration. 3-[4,5-Dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide assay was used to analyze cell proliferation. RESULTS DUXAP8 was upregulated, whereas miR-448 was downregulated in PC tissue and cells. Meanwhile, DUXAP8 knockdown or miR-448 overexpression inhibited migration, invasion, and proliferation of PC cells. DUXAP8 directly targeted miR-448, and miR-448 directly bound to WTAP. Downregulation of miR-448 reversed the inhibition of migration and invasion of PC cells by DUXAP8 knockdown. CONCLUSIONS DUXAP8 sponges miR-448 to modulate migration, invasion, and proliferation of PC cells, indicating a novel mechanistic role of DUXAP8 in the regulation of PC progression.
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Liu Y, Zhang H, Wang H, Du J, Dong P, Liu M, Lin Y. Long non-coding RNA DUXAP8 promotes the cell proliferation, migration, and invasion of papillary thyroid carcinoma via miR-223-3p mediated regulation of CXCR4. Bioengineered 2021; 12:496-506. [PMID: 33522355 PMCID: PMC8291844 DOI: 10.1080/21655979.2021.1882134] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Papillary thyroid carcinoma (PTC) is a differentiated type of thyroid malignancy with a high incidence. Long non-coding RNA (lncRNA) DUXAP8 has been reported to participate in the proliferation, migration, and invasion of several cancer types. However, its association with PTC has not yet been reported. The current study aimed to investigate the role of DUXAP8 in PTC and revealed the underlying mechanisms. The expression of DUXAP8 was knocked down in two PTC cell lines and the effects of DUXAP8 on the PTC biological behavior were examined by cell counting kit-8 (CCK-8), wound healing, and transwell invasion assays. Luciferase reporter assay was used to detect the binding activity between miR-223-3p and DUXAP8. We found that knockdown of DUXAP8 inhibited the proliferation, migration, and invasion of PTC cells. DUXAP8 could sponge miR-223-3p through the specific binding site. CXCR4 was a target of miR-223-3p. The malignant phenotypes of the PTC cells were suppressed by the over-expression of miR-223-3p. Moreover, miR-223-3p inhibition or CXCR4 over-expression partly restored the proliferation, migration, and invasion activities of DUXAP8-downregulated PTC cells. The results evidenced that DUXAP8 acted as an oncogene in PTC, these effects seemed to partly dependent on the miR-223-3p/CXCR4 axis.
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Affiliation(s)
- Yan Liu
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Hejia Zhang
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Hui Wang
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Jiarui Du
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Peng Dong
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Meihan Liu
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
| | - Yuanqiang Lin
- Department of Ultrasound, China-Japan Union Hospital of Jilin University , Changchun, People's Republic of China
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Silencing lncRNA DUXAP8 inhibits lung adenocarcinoma progression by targeting miR-26b-5p. Biosci Rep 2021; 41:227120. [PMID: 33269379 PMCID: PMC7791543 DOI: 10.1042/bsr20200884] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 12/16/2022] Open
Abstract
Lung adenocarcinoma (LUAD), a common type of lung cancer, has become a popularly aggressive cancer. Long noncoding RNAs (lncRNAs) play a critical role in the pathogenesis of human cancers, while the function of double homeobox A pseudogene 8 (DUXAP8) in LUAD remains to be fully inquired. Therefore, our study was conducted to elucidate the DUXAP8 expression in LUAD and its mechanism on the biological features of LUAD cells. Loss-of-function experiments were performed to assess the function of DUXAP8 proliferation and apoptosis of H1975 and A549 cells. Functionally, silencing DUXAP8 inhibited proliferation and induced apoptosis of LUAD cells. Mechanistically, further correlation assay indicated a negative association between miR-26b-5p and DUXAP8 expression. Subsequently, we testified that DUXAP8 exerted its role in the progression and development of LUAD through targeting miR-26b-5p. In summary, our results elucidated that that DUXAP8 promoted tumor progression in LUAD by targeting miR-26b-5p, which provide a novel therapeutic target for diagnosis and therapy of LUAD.
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Ashrafizadeh M, Gholami MH, Mirzaei S, Zabolian A, Haddadi A, Farahani MV, Kashani SH, Hushmandi K, Najafi M, Zarrabi A, Ahn KS, Khan H. Dual relationship between long non-coding RNAs and STAT3 signaling in different cancers: New insight to proliferation and metastasis. Life Sci 2021; 270:119006. [PMID: 33421521 DOI: 10.1016/j.lfs.2020.119006] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 12/14/2022]
Abstract
Uncontrolled growth and metastasis of cancer cells is an increasing challenge for overcoming cancer, and improving survival of patients. Complicated signaling networks account for proliferation and invasion of cancer cells that need to be elucidated for providing effective cancer therapy, and minimizing their malignancy. Long non-coding RNAs (lncRNAs) are RNA molecules with a length of more than 200 nucleotides. They participate in cellular events, and their dysregulation in a common phenomenon in different cancers. Noteworthy, lncRNAs can regulate different molecular pathways, and signal transducer and activator of transcription 3 (STAT3) is one of them. STAT3 is a tumor-promoting factors in cancers due to its role in cancer proliferation (cell cycle progression and apoptosis inhibition) and metastasis (EMT induction). LncRNAs can function as upstream mediators of STAT3 pathway, reducing/enhancing its expression. This dual relationship is of importance in affecting proliferation and metastasis of cancer cells. The response of cancer cells to therapy such as chemotherapy and radiotherapy is regulated by lncRNA/STAT3 axis. Tumor-promoting lncRNAs including NEAT1, SNHG3 and H19 induces STAT3 expression, while tumor-suppressing lncRNAs such as MEG3, PTCSC3 and NKILA down-regulate STAT3 expression. Noteworthy, upstream mediators of STAT3 such as microRNAs can be regulated by lncRNAs. These complicated signaling networks are mechanistically described in the current review.
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Affiliation(s)
- Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Üniversite Caddesi No. 27, Orhanlı, Tuzla 34956, Istanbul, Turkey; Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla 34956, Istanbul, Turkey
| | | | - Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | - Amirhossein Zabolian
- Young Researchers and Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Amirabbas Haddadi
- Young Researchers and Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | | | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonoses, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Masoud Najafi
- Medical Technology Research Center, Institute of Health Technology, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran; Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla 34956, Istanbul, Turkey.
| | - Kwang Seok Ahn
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan.
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Bok I, Karreth FA. Strategies to Study the Functions of Pseudogenes in Mouse Models of Cancer. Methods Mol Biol 2021; 2324:287-304. [PMID: 34165722 DOI: 10.1007/978-1-0716-1503-4_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Aberrant expression of pseudogenes has been observed in many cancer types. Deregulated pseudogenes engage in a multitude of biological processes at the DNA, RNA, and protein levels and eventually facilitate disease progression. To investigate pseudogene functions in cancer, cell lines and cell line transplantation models have been widely used. However, cancer biology is best studied in the context of an intact organism. Here, we present various strategies to investigate pseudogenes in genetically engineered mouse models and discuss advantages and disadvantages of the different approaches.
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Affiliation(s)
- Ilah Bok
- Cancer Biology Ph.D. Program, University of South Florida, Tampa, FL, USA
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Florian A Karreth
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA.
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Yang Y, Feng L, Ma H, Wang R, Fang J. High expression of novel biomarker KRT16P3 promotes the progression of tongue squamous cell carcinoma and predicts poor prognosis. J Oral Pathol Med 2020; 50:385-393. [PMID: 33220105 DOI: 10.1111/jop.13138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/22/2020] [Accepted: 11/07/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Overexpression of long non-coding RNAs (lncRNAs) reveals the abnormal pathological processes in many human cancers. KRT16P3, a novel overexpressed lncRNA in tongue squamous cell carcinoma (TSCC), was identified by previous lncRNA microarrays. However, the role of KRT16P3 in TSCC is not clear. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of KRT16P3 in TSCC tissues and cells. Next, the relationships between KRT16P3 and the clinical significance of TSCC patients were analyzed. Additionally, Cell Counting Kit-8, 5-Bromo-2-deoxyuridine (BrdU) incorporation assay, cell colony formation assay, flow cytometry cell apoptosis analysis, scratch wound healing assay, transwell invasion assay were used to explore the biological function of KRT16P3. Western blot and qRT-PCR were used to determine the expression of epithelial-mesenchymal transition (EMT) markers. The pathway changes after KRT16P3 knockdown were detected by Western blot. RESULTS We found KRT16P3 expression is significantly upregulated in TSCC tissues and positively associated with advanced clinicopathological features of TSCC patients, and it may serve as a poor prognostic factor. Functionally, KRT16P3 knockdown inhibits proliferation, migration, invasion and promotes apoptosis of TSCC cells. Furthermore, we also revealed that KRT16P3 knockdown suppresses EMT and JAK2/STAT3 signaling pathway. CONCLUSION Our results validated that KRT16P3 can modulate the malignant progression, EMT process, and JAK2/STAT3 signaling pathway of TSCC, which might also serve as a novel prognostic biomarker and an attractive target for TSCC patients.
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Affiliation(s)
- Yifan Yang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ling Feng
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Hongzhi Ma
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ru Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jugao Fang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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LncRNA double homeobox A pseudogene 8 (DUXAP8) facilitates the progression of neuroblastoma and activates Wnt/β-catenin pathway via microRNA-29/nucleolar protein 4 like (NOL4L) axis. Brain Res 2020; 1746:146947. [DOI: 10.1016/j.brainres.2020.146947] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/19/2020] [Accepted: 06/04/2020] [Indexed: 12/23/2022]
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Scarola M, Comisso E, Rosso M, Del Sal G, Schneider C, Schoeftner S, Benetti R. FUS-dependent loading of SUV39H1 to OCT4 pseudogene-lncRNA programs a silencing complex with OCT4 promoter specificity. Commun Biol 2020; 3:632. [PMID: 33128015 PMCID: PMC7603346 DOI: 10.1038/s42003-020-01355-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 10/01/2020] [Indexed: 11/16/2022] Open
Abstract
The resurrection of pseudogenes during evolution produced lncRNAs with new biological function. Here we show that pseudogene-evolution created an Oct4 pseudogene lncRNA that is able to direct epigenetic silencing of the parental Oct4 gene via a 2-step, lncRNA dependent mechanism. The murine Oct4 pseudogene 4 (mOct4P4) lncRNA recruits the RNA binding protein FUS to allow the binding of the SUV39H1 HMTase to a defined mOct4P4 lncRNA sequence element. The mOct4P4-FUS-SUV39H1 silencing complex holds target site specificity for the parental Oct4 promoter and interference with individual components results in loss of Oct4 silencing. SUV39H1 and FUS do not bind parental Oct4 mRNA, confirming the acquisition of a new biological function by the mOct4P4 lncRNA. Importantly, all features of mOct4P4 function are recapitulated by the human hOCT4P3 pseudogene lncRNA, indicating evolutionary conservation. Our data highlight the biological relevance of rapidly evolving lncRNAs that infiltrate into central epigenetic regulatory circuits in vertebrate cells.
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Affiliation(s)
- Michele Scarola
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy
- Dipartimento di Area Medica (DAME), Università degli Studi di Udine, p.le Kolbe 4, 33100, Udine, Italy
| | - Elisa Comisso
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy
- Dipartimento di Area Medica (DAME), Università degli Studi di Udine, p.le Kolbe 4, 33100, Udine, Italy
| | - Massimo Rosso
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy
- Dipartimento di Science della Vita, Università degli Studi di Trieste, Via E. Weiss 2, 34127, Trieste, Italy
| | - Giannino Del Sal
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy
- Dipartimento di Science della Vita, Università degli Studi di Trieste, Via E. Weiss 2, 34127, Trieste, Italy
| | - Claudio Schneider
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy
- Dipartimento di Area Medica (DAME), Università degli Studi di Udine, p.le Kolbe 4, 33100, Udine, Italy
| | - Stefan Schoeftner
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy.
- Dipartimento di Science della Vita, Università degli Studi di Trieste, Via E. Weiss 2, 34127, Trieste, Italy.
| | - Roberta Benetti
- Laboratorio Nazionale-Consorzio Interuniversitario per le Biotecnologie, Laboratorio Nazionale (LNCIB), Padriciano 99, 34149, Trieste, Italy.
- Dipartimento di Area Medica (DAME), Università degli Studi di Udine, p.le Kolbe 4, 33100, Udine, Italy.
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He W, Yu Y, Huang W, Feng G, Li J. The Pseudogene DUXAP8 Promotes Colorectal Cancer Cell Proliferation, Invasion, and Migration by Inducing Epithelial-Mesenchymal Transition Through Interacting with EZH2 and H3K27me3. Onco Targets Ther 2020; 13:11059-11070. [PMID: 33149618 PMCID: PMC7605666 DOI: 10.2147/ott.s235643] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 09/09/2020] [Indexed: 12/16/2022] Open
Abstract
Background Colorectal cancer (CRC) is the third leading cause of cancer death worldwide. The long noncoding RNA (lncRNA) DUXAP8 has been reported to play an important role in CRC. This study investigated the mechanism by which this lncRNA regulates CRC progression. Methods The levels of lncRNA DUXAP8 in CRC tissues and cell lines were detected by qRT-PCR. We then knocked down or forced overexpression of DUXAP8, and the resultant effect on cell proliferation was determined by the Edu assay and a cell cycle analysis, and the effect on cell apoptosis was determined by flow cytometry. The cell invasion/migration ability and the epithelial-to-mesenchymal transition (EMT) markers were determined by Transwell/wound healing assays and Western blotting. CHIP and RNA pull-down assays were performed to determine the binding of Zeste gene enhancer 2 (EZH2) and trimethylated histone H3 to Lys27 (H3K27me3) in the E-cadherin promoter regions, or to DUXAP8. Results The levels of lncRNA DUXAP8 were significantly increased in CRC tissues and CRC cell lines. Knockdown of lncRNA DUXAP8 inhibited cell proliferation and the EMT process, and increased cell apoptosis, and overexpression of lncRNA DUXAP8 had an opposite effect. Both ChIP and RNA pull-down assays showed that the E-cadherin promoter region was bound by H3K27me3 and EZH2, which restrained E-cadherin expression. However, that binding was suppressed and E-cadherin expression was markedly induced by lncRNA DUXAP8 knockdown. Furthermore, lncRNA DUXAP8 could interact with EZH2 and H3K27me3. Conclusion Our data indicated that lncRNA DUXAP8 could induce the progression of CRC by negatively regulating E-cadherin via interaction with EZH2 and H3K27me3. These findings suggest lncRNA DUXAP8 as target for treating CRC.
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Affiliation(s)
- Wenjing He
- Institute of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Yi Yu
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Wei Huang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Guoliang Feng
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Junhe Li
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People's Republic of China
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Hu Y, Zhang X, Zai HY, Jiang W, Xiao L, Zhu Q. lncRNA DUXAP8 Facilitates Multiple Malignant Phenotypes and Resistance to PARP Inhibitor in HCC via Upregulating FOXM1. MOLECULAR THERAPY-ONCOLYTICS 2020; 19:308-322. [PMID: 33313387 PMCID: PMC7701012 DOI: 10.1016/j.omto.2020.10.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/17/2020] [Indexed: 02/08/2023]
Abstract
In this study, we examined the clinical significance and molecular mechanisms of a long non-coding RNA (lncRNA), double homeobox A pseudogene 8 (DUXAP8) in hepatocellular carcinoma (HCC). DUXAP8 expression was compared using quantitative real-time PCR in HCC versus adjacent tissues and in HCC cell lines versus normal hepatic epithelial cells. The correlations between DUXAP8 level and clinicopathological features were analyzed. Assays including MTT, colony-forming analysis, Transwell assay, western blot, xenograft formation, experimental metastasis, luciferase assay, RNA pull-down, and RNA immunoprecipitation were used to examine DUXAP8-induced malignant phenotypes, its regulation on forkhead box protein M1 (FOXM1), and the importance of FOXM1 in mediating DUXAP8 phenotypes. Our results showed that DUXAP8 was significantly upregulated in HCC tissues or cell lines associated with tumors of advanced grades, tumors that were positive for lymph node metastasis, and patients with poor overall survival. DUAXP8 was essential in maintaining multiple malignant phenotypes (including resistance to olaparib) both in vitro and in vivo. Mechanistically, DUXAP8 upregulated FOXM1 expression by sponging miR-485-5p and interacting with the RNA-binding protein Fused in Sarcoma (FUS). Functionally, FOXM1 essentially mediated the oncogenic phenotypes of DUXAP8. Collectively, DUXAP8 acts through two distinct mechanisms to upregulate FOXM1 and becomes a pleotropic oncogenic lncRNA in HCC.
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Affiliation(s)
- Yu Hu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Xian Zhang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Hong-Yan Zai
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Wei Jiang
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Liang Xiao
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
| | - Qin Zhu
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, P.R. China
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He C, Qin H, Tang H, Yang D, Li Y, Huang Z, Zhang D, Lv C. Comprehensive bioinformatics analysis of the TP53 signaling pathway in Wilms' tumor. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1228. [PMID: 33178760 PMCID: PMC7607069 DOI: 10.21037/atm-20-6047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Differential expression of tumor protein 53 (TP53, or p53) has been observed in multiple cancers. However, the expression levels and prognostic role of TP53 signaling pathway genes in Wilms' tumor (WT) have yet to be fully explored. Methods The expression levels of TP53 signaling pathway genes including TP53, mouse double minute 2 (MDM2), mouse double minute 4 (MDM4), cyclin-dependent kinase 2A (CDKN2A), cyclin-dependent kinase 2B (CDKN2B), and tumor suppressor p53-binding protein 1 (TP53BP1) in WT were analyzed using the Oncomine database. Aberration types, co-mutations, mutation locations, signaling pathways, and the prognostic role of TP53 in WT were investigated using cBioPortal. MicroRNA (miRNA) and transcription factor (TF) targets were identified with miRTarBase, miWalk, and ChIP-X Enrichment Analysis 3 (CheA3), respectively. A protein-protein network was constructed using GeneMANIA. The expression of TP53 signaling genes were confirmed in WT samples and normal kidney tissues using the Human Protein Atlas (HPA). Cancer Therapeutics Response Portal (CTRP) was used to analyze the small molecules potentially targeting TP53. Results TP53 was significantly expressed in the Cutcliffe Renal (P=0.010), but not in the Yusenko Renal (P=0.094). Meanwhile, MDM2 was significantly overexpressed in the Yusenko Renal (P=0.058), but not in the Cutcliffe Renal (P=0.058). The expression levels of MDM4 no significant difference between the tumor and normal tissue samples. The most common TP53 alteration was missense and the proportion of TP53 pathway-related mutations was 2.3%. Co-expressed genes included ZNF609 (zinc finger protein 609), WRAP53 (WD40-encoding RNA antisense to p53), CNOT2 (CC chemokine receptor 4-negative regulator of transcription 2), and CDH13 (cadherin 13). TP53 alterations indicated poor prognosis of WT (P=1.051e-4). The regulators of the TP53 pathway included miR-485-5p and TFs NR2F2 and KDM5B. The functions of TP53 signaling pathway were signal transduction in response to DNA damage and regulate the cell cycle. The small molecules targeting TP53 included PRIMA-1, RITA, SJ-172550, and SCH-529074. Conclusions TP53 was found to be differentially expressed in WT tissues. TP53 mutations indicated poor outcomes of WT. Therefore, pifithrin-mu, PRIMA-1, RITA, SJ-172550, and SCH-529074 could be used in combination with traditional chemotherapy to treat WT.
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Affiliation(s)
- Changjing He
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Huatao Qin
- Department of Nursing, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Haizhou Tang
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Di Yang
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Yufeng Li
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Zhenwen Huang
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Donghu Zhang
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Changheng Lv
- Department of Pediatric Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
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Xu D, Liu X, Wu J, Wang Y, Zhou K, Chen W, Chen J, Chen C, Chen L. LncRNA WWOX-AS1 sponges miR-20b-5p in hepatocellular carcinoma and represses its progression by upregulating WWOX. Cancer Biol Ther 2020; 21:927-936. [PMID: 32931356 DOI: 10.1080/15384047.2020.1806689] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Increasing evidence has revealed that long noncoding RNAs (lncRNAs) emerge as pivotal regulators in diverse cancers, including hepatocellular carcinoma (HCC). This study was conducted to investigate the role of lncRNA WWOX antisense RNA 1 (WWOX-AS1) in HCC progression. Our present study illustrated that WWOX-AS1 was lowly expressed in HCC tissues and cell lines. High WWOX-AS1 expression was further confirmed to predict a favorable prognosis in HCC patients. Through functional assays, we observed that upregulated WWOX-AS1 was correlated with decreased cell proliferation, migration, epithelial to mesenchymal transition (EMT) process and increased cell apoptosis, suggesting that WWOX-AS1 exerted anti-carcinogenic role in the development of HCC. Moreover, WWOX, the nearby gene of WWOX-AS1, was found at a low level in HCC tissues and cell lines. Furthermore, there was a positive relationship between WWOX-AS1 and WWOX. Additionally, WWOX overexpression hampered cell proliferation, migration, EMT process and induced cell apoptosis in HCC. Mechanically, WWOX-AS1 was identified as a cytoplasmic RNA in HCC cells and sponged miR-20b-5p to regulate WWOX expression. Rescue assays further indicated that WWOX knockdown counteracted WWOX-AS1 overexpression-mediated suppressive function on HCC progression. Collectively, WWOX-AS1/miR-20b-5p/WWOX axis suppresses HCC tumorigenesis, hinting a potential molecular mechanism for the therapy of HCC patients.
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Affiliation(s)
- Dafeng Xu
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Xiangmei Liu
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Jincai Wu
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Yu Wang
- Geriatrics Center, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Kailun Zhou
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Wenmei Chen
- Gastroenterology Department, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Jiacheng Chen
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Cheng Chen
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
| | - Liang Chen
- Department of Hepatobiliary and Pancreatic Surgery, Hainan General Hospital, Hainan Medical University , Haikou, China
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